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Identify whether my string contains any hex code or not in java

I want to identify whether my string contains any hex code or not.
Use cases
String input1 = "hello check this input ";
String input2 = "hello check 0x740x680x690x73 input";
String input3 = "0x680x650x6c0x6c0x6f0x200x630x680x650x630x6b0x200x740x680x690x730x200x690x6e0x700x750x74";
isContainHex(input1) should return false
isContainHex(input2) should return true
isContainHex(input3) should return true
I have tried
String input2 = "hello check 0x740x680x690x73 input";
if(input2.contains("0x") || input2.contains("\\x"))
{
System.out.println("string contains hex");
}
and I am able to find hex but,
If My input contains hex like
String input4 = "h68h65h6ch6ch6f check this input ";
Here I cant check input4.contains("h")
Any one have solution for this?
is there any standard library by which I can achive same?
Update
I have wrote following code, and its working well but taking time.
Now can it be optimize
try
{
if (input != null && input.trim().length() > 0)
{
String originalHex = null;
StringBuilder output = new StringBuilder();
String inputArray[] = null;
if (StringUtils.countMatches(input, "\\x") > 3)
{
originalHex = input.substring(input.indexOf("\\x"), input.lastIndexOf("\\x", input.length()) + 4);
inputArray = input.split("\\Q\\x\\E");
}
else if (StringUtils.countMatches(input, "0x") > 3)
{
originalHex = input.substring(input.indexOf("0x"), input.lastIndexOf("0x", input.length()) + 4);
inputArray = input.split("0x");
}
if (inputArray != null && inputArray.length > 0)
{
for (String str: inputArray)
{
int strLength = str.trim().length();
if (strLength == 2)
{
output.append((char)Integer.parseInt(str, 16));
}
else if (strLength > 2)
{
if (strLength % 2 != 0)
{
strLength = strLength - 1;
}
for (int i = 0; i < strLength; i += 2)
{
String val = str.substring(i, i+2);
if (val.matches("\\d+"))
{
output.append((char)Integer.parseInt(val, 16));
}
}
}
}
input = input.replaceAll("\\Q" + originalHex + "\\E", output.toString());
}
}
}
catch(Exception ex)
{
ex.printStackTrace();
}
syso(input);

HashMap key that is made up of multiple tokens and has non-null value mapping returns null

I am creating a currency exchange application from csv data and have hit a road block. I am storing the main currency exchange rate table in a LinkedHashMap of the following type:
LinkedHashMap[String,LinkedHashMap[String,Double]]
It will store the data as [Country, [Year,Rate]].
When I print to the console to confirm that the Map is being populated properly, I receive confirmation of a full KeySet and proper value mappings. Additionally, the application runs smoothly for any country names consisting of only one token. However, countries with more than one token in their names return null even though the map is populated with that key and its correct corresponding value.
For example, printing getExchangeRates() will return all K-V pairs including the following:
Australia={1960=0.8929, 1961=0.8929, 1962=0.8929, 1963=0.8929, 1964=0.8929, 1965=0.8929...},
Czech Republic={1990=21.145, 1991=27.92, 1992=28.37, 1993=29.153, 1994=28.785, 1995=26.541...},
New Zealand={1960=0.7143, 1961=0.7155, 1962=0.7192, 1963=0.7192, 1964=0.7192, 1965=0.7192...}
Printing getExchangeRates().get("Australia") will return the LinkedHashMap of years and rates; however, printing getExchangeRates().get("Czech Republic") or getExchangeRates().get("New Zealand") will return null.
Does anyone know why this would be happening? I am befuddled.
Code and csv snippet included for reference, but as I said, the HashMap appears to be populating correctly.
,1960,1961,1962,1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008
Australia,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8929,0.8827,0.8387,0.7041,0.6967,0.7639,0.8183,0.9018,0.8737,0.8946,0.8782,0.8702,0.9859,1.11,1.1395,1.4319,1.496,1.4282,1.2799,1.2646,1.2811,1.2838,1.3617,1.4706,1.3678,1.349,1.2779,1.3474,1.5918,1.55,1.7248,1.9334,1.8406,1.5419,1.3598,1.3095,1.328,1.1951,1.1922
Austria,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.88949,1.81394,1.67985,1.42293,1.35844,1.26573,1.30373,1.20106,1.05533,0.97145,0.94024,1.15745,1.23975,1.30544,1.45412,1.50356,1.1095,0.91877,0.89734,0.96151,0.82628,0.84852,0.79862,0.84534,0.83005,0.73265,0.76936,0.88691,0.89962,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Belgium,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.21145,1.09109,0.9662,0.96558,0.91173,0.957,0.88852,0.78067,0.72679,0.72488,0.92041,1.13264,1.26752,1.43243,1.47194,1.10739,0.92549,0.91146,0.9768,0.82841,0.84651,0.79697,0.85762,0.82936,0.73079,0.76752,0.88681,0.89982,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Canada,0.9698,1.0131,1.0701,1.0811,1.0811,1.0811,1.0811,1.0811,1.0811,1.0811,1.0477,1.0098,0.9899,1.0001,0.978,1.0172,0.986,1.0635,1.1407,1.1714,1.1692,1.1989,1.2337,1.2324,1.2951,1.3655,1.3895,1.326,1.2307,1.184,1.1668,1.1457,1.2087,1.2901,1.3656,1.3724,1.3635,1.3846,1.4835,1.4857,1.4851,1.5488,1.5693,1.4011,1.301,1.2118,1.1344,1.0741,1.067
Czech Republic,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,21.145,27.92,28.37,29.153,28.785,26.541,27.145,31.698,32.281,34.569,38.598,38.035,32.739,28.209,25.7,23.957,22.596,20.294,17.072
Denmark,6.9071,6.9071,6.9071,6.9071,6.9071,6.9071,6.9071,6.9565,7.5,7.5,7.5,7.4169,6.9493,6.0495,6.0949,5.7462,6.045,6.0032,5.5146,5.261,5.6359,7.1234,8.3324,9.145,10.3566,10.5964,8.091,6.8403,6.7315,7.3102,6.1886,6.3965,6.0361,6.4839,6.3606,5.6024,5.7987,6.6045,6.7008,6.9762,8.0831,8.3228,7.8947,6.5877,5.9911,5.9969,5.9468,5.4437,5.0981
Finland,0.5382,0.5382,0.5382,0.5382,0.5382,0.5382,0.5382,0.58025,0.70638,0.70638,0.70638,0.70375,0.69736,0.64267,0.6347,0.61871,0.64995,0.6777,0.69249,0.65515,0.62735,0.72577,0.81074,0.93682,1.01081,1.04241,0.85263,0.73928,0.7035,0.72173,0.64307,0.68015,0.75339,0.96074,0.87853,0.73442,0.77258,0.87314,0.89881,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
France,0.75266,0.75266,0.75266,0.75266,0.75266,0.75266,0.75266,0.75266,0.75266,0.79185,0.84673,0.84496,0.769,0.67959,0.7339,0.65343,0.72855,0.74907,0.68802,0.64858,0.64419,0.8285,1.00191,1.16186,1.33227,1.36978,1.05588,0.91633,0.90812,0.97264,0.83013,0.86014,0.80704,0.86335,0.8464,0.76095,0.77986,0.8898,0.89938,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Germany,2.14743,2.06221,2.04517,2.04517,2.04517,2.04517,2.04517,2.04517,2.04517,2.01619,1.87133,1.78481,1.63033,1.36648,1.3231,1.25793,1.28743,1.18731,1.027,0.93714,0.92936,1.15552,1.2407,1.30546,1.45511,1.50523,1.11026,0.91899,0.89795,0.96125,0.82611,0.84851,0.79846,0.84533,0.82972,0.73275,0.76938,0.88661,0.8997,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Greece,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08804,0.08694,0.08804,0.09406,0.10717,0.10811,0.10784,0.1087,0.12507,0.16261,0.19605,0.25844,0.33079,0.40534,0.4108,0.39745,0.41632,0.47665,0.46519,0.5349,0.55942,0.67278,0.71197,0.67986,0.70642,0.80134,0.86729,0.89698,1.07234,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Hungary,..,..,..,..,..,..,..,..,60,60,60,59.82,55.26,48.97,46.75,43.97,41.58,40.96,37.91,35.58,32.53,34.31,36.63,42.67,48.04,50.12,45.83,46.97,50.41,59.07,63.21,74.74,78.99,91.93,105.16,125.68,152.65,186.79,214.4,237.15,282.18,286.49,257.89,224.31,202.75,199.58,210.39,183.63,172.11
Iceland,0.344,0.401,0.43,0.43,0.43,0.43,0.43,0.442,0.622,0.88,0.88,0.88,0.883,0.901,1,1.537,1.822,1.989,2.711,3.526,4.798,7.224,12.352,24.843,31.694,41.508,41.104,38.677,43.014,57.042,58.284,58.996,57.546,67.603,69.944,64.692,66.5,70.904,70.958,72.335,78.616,97.425,91.662,76.709,70.192,62.982,70.18,64.055,87.948
Ireland,0.45347,0.45347,0.45347,0.45347,0.45347,0.45347,0.45347,0.45977,0.52906,0.52906,0.52906,0.52176,0.50839,0.51827,0.54313,0.57397,0.70662,0.7279,0.66217,0.62038,0.61792,0.78889,0.89461,1.02173,1.1714,1.20068,0.94358,0.85443,0.83354,0.89585,0.76767,0.78888,0.74625,0.85993,0.84898,0.79198,0.79362,0.83757,0.8917,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Italy,0.32226,0.32279,0.32279,0.32279,0.32279,0.32279,0.32279,0.32279,0.32279,0.32279,0.32279,0.32017,0.30121,0.30109,0.33587,0.33717,0.42987,0.45572,0.4383,0.4291,0.44232,0.58709,0.69851,0.78442,0.90739,0.98614,0.76994,0.66936,0.67223,0.70863,0.61877,0.64072,0.63649,0.81273,0.83276,0.84127,0.79687,0.87958,0.89668,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Japan,360,360,360,360,360,360,360,360,360,360,360,349.33,303.17,271.7,292.08,296.79,296.55,268.51,210.44,219.14,226.74,220.54,249.08,237.51,237.52,238.54,168.52,144.64,128.15,137.96,144.79,134.71,126.65,111.2,102.21,94.06,108.78,120.99,130.91,113.91,107.77,121.53,125.39,115.93,108.19,110.22,116.3,117.75,103.36
Korea,..,..,..,..,..,..,271.3,270.5,276.7,288.2,310.6,347.2,392.9,398.3,404.5,484,484,484,484,484,607.4,681,731.1,775.8,806,870,881.5,822.6,731.5,671.5,707.8,733.4,780.7,802.7,803.4,771.3,804.5,951.3,1401.4,1188.8,1131,1291,1251.1,1191.6,1145.3,1024.1,954.8,929.3,1102.1
Luxembourg,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.23947,1.21145,1.09109,0.9662,0.96558,0.91173,0.957,0.88852,0.78067,0.72679,0.72488,0.92041,1.13264,1.26752,1.43243,1.47194,1.10739,0.92549,0.91146,0.9768,0.82841,0.84651,0.79697,0.85762,0.82936,0.73079,0.76752,0.88681,0.89982,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Mexico,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.013,0.015,0.023,0.023,0.023,0.023,0.025,0.056,0.12,0.168,0.257,0.612,1.378,2.273,2.462,2.813,3.018,3.095,3.116,3.375,6.419,7.599,7.918,9.136,9.56,9.456,9.342,9.656,10.789,11.286,10.898,10.899,10.928,11.13
Netherlands,1.72436,1.6563,1.64268,1.64268,1.64268,1.64268,1.64268,1.64268,1.64268,1.64268,1.64268,1.58933,1.45641,1.26857,1.21993,1.14761,1.19977,1.11369,0.98179,0.91028,0.90217,1.13227,1.21169,1.29515,1.45604,1.50719,1.11177,0.91922,0.89693,0.96235,0.82631,0.84842,0.79796,0.84281,0.82588,0.72863,0.76503,0.88545,0.90018,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
New Zealand,0.7143,0.7155,0.7192,0.7192,0.7192,0.7192,0.7192,0.7337,0.8929,0.8929,0.8929,0.8806,0.8368,0.7368,0.7154,0.8323,1.0049,1.0303,0.9644,0.9785,1.0267,1.1528,1.3326,1.4968,1.764,2.0234,1.9132,1.6946,1.5264,1.6722,1.6762,1.7335,1.8618,1.8505,1.6865,1.5239,1.4549,1.5124,1.8683,1.8896,2.2012,2.3788,2.1622,1.7221,1.5087,1.4203,1.5421,1.3607,1.4227
Norway,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.1429,7.0418,6.5883,5.7658,5.5397,5.2269,5.4565,5.3235,5.2423,5.0641,4.9392,5.7395,6.454,7.2964,8.1615,8.5972,7.3947,6.7375,6.517,6.9045,6.2597,6.4829,6.2145,7.0941,7.0576,6.3352,6.4498,7.0734,7.5451,7.7992,8.8018,8.9917,7.9838,7.0802,6.7408,6.4425,6.4133,5.8617,5.64
Poland,..,..,..,..,..,..,0.0004,0.0004,0.0004,0.0004,0.0004,0.0004,0.0004,0.0003,0.0003,0.0003,0.0003,0.0003,..,0.004,0.0044,0.0051,0.0085,0.0092,0.0113,0.0147,0.0175,0.0265,0.0431,0.1439,0.95,1.0576,1.3626,1.8115,2.2723,2.425,2.6961,3.2793,3.4754,3.9671,4.3461,4.0939,4.08,3.8891,3.6576,3.2355,3.1032,2.768,2.4092
Portugal,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.1434,0.14122,0.13494,0.12228,0.12673,0.12746,0.15078,0.19092,0.21916,0.24403,0.24971,0.30699,0.39641,0.55257,0.73019,0.84993,0.74614,0.70272,0.71804,0.7854,0.71106,0.72067,0.67337,0.80207,0.82797,0.75371,0.76937,0.87445,0.89835,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Slovak Republic,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,1.0214,1.0637,0.9863,1.0175,1.1159,1.1695,1.373,1.5281,1.6051,1.5046,1.2206,1.0707,1.0296,0.9858,0.8197,0.7091
Spain,0.36061,0.36061,0.36061,0.36061,0.36061,0.36061,0.36061,0.37063,0.42071,0.42071,0.42071,0.41752,0.38628,0.35015,0.3467,0.34502,0.4021,0.45654,0.46078,0.40343,0.43094,0.55487,0.66027,0.86203,0.96619,1.02199,0.84171,0.74212,0.7001,0.71147,0.61264,0.62452,0.61531,0.76485,0.8051,0.7494,0.76125,0.87997,0.89788,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Sweden,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1732,5.1168,4.7624,4.3673,4.4394,4.1522,4.3559,4.4816,4.5185,4.2871,4.2296,5.0634,6.2826,7.6671,8.2718,8.6039,7.1236,6.3404,6.1272,6.4469,5.9188,6.0475,5.8238,7.7834,7.716,7.1333,6.706,7.6349,7.9499,8.2624,9.1622,10.3291,9.7371,8.0863,7.3489,7.4731,7.3783,6.7588,6.5911
Switzerland,4.373,4.373,4.373,4.373,4.373,4.373,4.373,4.373,4.373,4.373,4.373,4.1342,3.8193,3.1648,2.9793,2.5813,2.4996,2.4035,1.788,1.6627,1.6757,1.9642,2.0303,2.0991,2.3497,2.4571,1.7989,1.4912,1.4633,1.6359,1.3892,1.434,1.4062,1.4776,1.3677,1.1825,1.236,1.4513,1.4498,1.5022,1.6888,1.6876,1.5586,1.3467,1.2435,1.2452,1.2538,1.2004,1.0831
Turkey,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,0.0001,0.0001,0.0002,0.0002,0.0004,0.0005,0.0007,0.0009,0.0014,0.0021,0.0026,0.0042,0.0069,0.011,0.0296,0.0458,0.0814,0.1519,0.2607,0.4188,0.6252,1.2256,1.5072,1.5009,1.4255,1.3436,1.4285,1.3029,1.3015
United Kingdom,0.35714,0.35714,0.35714,0.35714,0.35714,0.35714,0.35714,0.3621,0.41667,0.41667,0.41667,0.41092,0.40039,0.40817,0.42776,0.45204,0.55651,0.57327,0.52151,0.47218,0.4303,0.49764,0.57245,0.65973,0.75181,0.77925,0.6822,0.61193,0.56217,0.61117,0.56318,0.56702,0.56977,0.66676,0.65343,0.63367,0.64096,0.61084,0.60382,0.61806,0.66093,0.69466,0.66722,0.61247,0.54618,0.55,0.54349,0.49977,0.54397
United States,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
Euro area,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,0.76452,0.78756,0.8818,0.89199,0.93863,1.0854,1.11751,1.06255,0.88603,0.80537,0.80412,0.79714,0.73064,0.68268
Brazil,0.0001,0.0001,0.0001,0.0002,0.0005,0.0007,0.0009,0.001,0.0013,0.0016,0.0018,0.002,0.0023,0.0024,0.0026,0.0031,0.0041,0.0055,0.007,0.0104,0.0203,0.0359,0.0693,0.2227,0.7131,2.3925,5.2694,15.137,79.6677,-,-,0.0001,0.0016,0.0322,0.6393,0.9177,1.0051,1.078,1.1605,1.8139,1.8294,2.3496,2.9204,3.0775,2.9251,2.4344,2.1753,1.9471,1.8338
Chile,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,396.77,412.27,419.3,460.29,508.78,539.59,634.94,688.94,691.4,609.53,559.77,530.28,522.46,522.46
China,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.462,2.245,1.989,1.961,1.86,1.941,1.858,1.684,1.555,1.498,1.705,1.893,1.976,2.32,2.937,3.453,3.722,3.722,3.765,4.783,5.323,5.515,5.762,8.619,8.351,8.314,8.29,8.279,8.278,8.279,8.277,8.277,8.277,8.277,8.194,7.973,7.608,6.949
Estonia,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,13.223,12.991,11.465,12.038,13.882,14.075,14.678,16.969,17.478,16.612,13.856,12.596,12.584,12.466,11.434,10.694
India,4.77,4.78,4.77,4.78,4.79,4.79,6.3,7.56,7.58,7.59,7.57,7.52,7.59,7.74,8.1,8.38,8.96,8.74,8.19,8.13,7.86,8.66,9.46,10.1,11.36,12.37,12.61,12.96,13.92,16.23,17.5,22.74,25.92,30.49,31.37,32.43,35.43,36.31,41.26,43.06,44.94,47.19,48.61,46.58,45.32,44.1,45.31,41.35,43.51
Indonesia,..,..,..,..,..,..,..,150,296,326,363,392,415,415,415,415,415,415,442,623,627,632,661,909,1026,1111,1283,1644,1686,1770,1843,1950,2030,2087,2161,2249,2342,2909,10014,7855,8422,10261,9311,8577,8939,9705,9159,9141,9699
Israel 1,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,3.0113,3.1917,3.4494,3.8001,4.1397,4.0773,4.2057,4.7378,4.5541,4.482,4.4877,4.4558,4.1081,3.588
Russian Federation,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,0.992,2.191,4.559,5.121,5.785,9.705,24.62,28.129,29.169,31.349,30.692,28.814,28.284,27.191,25.581,24.853
Slovenia,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,..,0.11505,0.3392,0.47255,0.53751,0.49457,0.56486,0.66637,0.69326,0.75851,0.92913,1.01297,1.00254,0.86427,0.80279,0.80414,0.79715,0.73064,0.68268
South Africa,0.713,0.715,0.713,0.715,0.717,0.716,0.717,0.717,0.717,0.718,0.716,0.712,0.773,0.694,0.679,0.74,0.87,0.87,0.87,0.842,0.779,0.878,1.086,1.114,1.475,2.229,2.285,2.036,2.273,2.623,2.587,2.761,2.852,3.268,3.551,3.627,4.299,4.608,5.528,6.109,6.94,8.609,10.541,7.565,6.46,6.359,6.772,7.045,8.261
public static ArrayList<String> getYears() throws IOException {
File file = new File("exchangerates.csv");
BufferedReader br = new BufferedReader(new FileReader(file));
ArrayList<String> years = new ArrayList<String>();
String line = br.readLine();
String year = "";
for(int i = 1; i < line.length(); i++) {
if(line.charAt(i) != ',' && i != line.length()-1) {
year = year + line.charAt(i);
}
else if(i == line.length()-1) {
year = year + line.charAt(i);
years.add(year);
}
else {
years.add(year);
year = "";
}
}
br.close();
return years;
}
public static LinkedHashMap<String,LinkedHashMap<String,Double>> getExchangeRates() throws IOException {
File file = new File("exchangerates.csv");
BufferedReader br = new BufferedReader(new FileReader(file));
//burn first line
br.readLine();
LinkedHashMap<String,LinkedHashMap<String,Double>> exchangeRatesTable = new LinkedHashMap<String,LinkedHashMap<String,Double>>();
String line = null;
while((line = br.readLine()) != null) {
String country = "";
int index = 0;
while(line.charAt(index) != ',') {
country = country + line.charAt(index);
index++;
}
index++; //skip comma
LinkedHashMap<String,Double> yearlyRateMap = new LinkedHashMap<String,Double>();
for(String year : getYears()) {
String rateString = "";
for(int k = index; k < line.length(); k++) {
if(line.charAt(k) != ',' && k != line.length()-1) {
rateString = rateString + line.charAt(k);
index++;
}
else if(k == line.length()-1) {
rateString = rateString + line.charAt(k);
index++;
if(!rateString.equals("..")) {
Double exchangeRate = new Double(rateString);
yearlyRateMap.put(year, exchangeRate);
}
else {
index++;
break;
}
break;
}
else {
if(!rateString.equals("..") && !rateString.equals("-")) {
index++;
Double exchangeRate = new Double(rateString);
yearlyRateMap.put(year, exchangeRate);
}
else {
index++;
break;
}
break;
}
}
}
exchangeRatesTable.put(country, yearlyRateMap);
}
br.close();
return exchangeRatesTable;
}

3 line read from txt file

txt file read and 1~3 line is send Mesaage and 3~6 line read message send
but 1~3 read after send, next Again 1~3 line read after send...
I want 3 line read Repeat from txt file
test.txt
1|11221234|c1|c2|c3|c4
2|11221234|c1|c2|c3|c4
3|11221234|c1|c2|c3|c4
4|11221234|c1|c2|c3|c4
5|11221234|c1|c2|c3|c4
6|11221234|c1|c2|c3|c4
7|11221234|c1|c2|c3|c4
8|11221234|c1|c2|c3|c4
9|11221234|c1|c2|c3|c4
9|11221234|c1|c2|c3|c4
10|11221234|c1|c2|c3|c4
11|11221234|c1|c2|c3|c4
12|11221234|c1|c2|c3|c4
13|11221234|c1|c2|c3|c4
while ((s = in.readLine()) != null) {
cnt++;
Element record = new Element("RECORD");
String[] arr = s.split("│");
if (arr.length == tableInfoMap.size()) {
for (int i = 0; i < arr.length; i++) {
int j = i + 1;
String fieldName = (String) tableInfoMap
.get("COLUMN" + j);
Element field = new Element(fieldName);
field.addContent(new CDATA(arr[i]));
record.addContent(field);
}
} else {
throw new ArrayIndexOutOfBoundsException(" ");
}
rootElement.addContent(record);
if (cnt >= 3) {
sendMsg(srcTblName, tgtTblName, classPath,
className, doc, comm, sndAgency, rcvAgency,
cnt);
cnt = 0;
}
}
if (cnt > 0) {
boolean isSend = sendMsg(srcTblName, tgtTblName,
classPath, className, doc, comm, sndAgency,
rcvAgency, cnt);
in.close();
if (isSend == true) {
File f = new File(file);
if (f.delete() == true) {
logger.info("Send File Success: " + file);
logger.debug(f.getPath());
} else {
logger.warn("Send File Fail: " + file);
logger.debug(f.getPath());
}
}
}

Unsure what the question is but the | character in the split() requires escaping (the argument to split() is a regular expression and not a plain string):
String[] arr = s.split("\\│"); // Match | character only.

How do I get my array out of try/catch block?

I've been kicking this code around for a while and I think I know what the general problem is, I can't figure out how to correct it. I'm getting the following error:
C:\Documents and Settings\Joe King\My Documents\418.85A Java\Project5>javac Project5.java
Project5.java:408: error: variable boatNames might not have been initialized
boatArray1 = new Boat[boatNames.length];
^
1 error
The problem is my boatNames array is in a try/catch block and I think this is isolating it from the rest of the code. How can I get the boatNames array out of the try/catch block?
My code is as follows:
class Project5{
public static void main(String[] args){
String[] boatNames;
Boat[] boatArray1;
Boat[] boatArray2;
String result = " ";
String name = null;
char firstChar;
char firstLetter;
char secondLetter;
int totalRead;
int i;
int j;
int k;
int l;
int m;
Path inPath = Paths.get("C:/Documents and Settings/Joe King/My Documents/418.85A Java/Projects/Input").resolve("Boat Names.txt");
if(!Files.exists(inPath)){
System.out.println(inPath + " does not exist. Terminating the program.");
System.exit(1);
}
try(BufferedReader fileIn = Files.newBufferedReader(inPath, Charset.forName("UTF-16"))){
totalRead = 0;
while(fileIn.readLine() != null){
name = fileIn.readLine();
++totalRead;
name = null;
}
boatNames = new String[totalRead];
for(i = 0 ; i < boatNames.length ; ++i){
name = fileIn.readLine();
boatNames[i] = name;
name = null;
}
}catch(IOException e){
System.err.println("Error writing file: " + inPath);
e.printStackTrace();
}
Path outPath = Paths.get("C:/Documents and Settings/Joe King/My Documents/418.85A Java/Projects/Output").resolve("Fleet Registry.txt");
try{
Files.createDirectories(outPath.getParent());
}catch(IOException e){
System.err.println("Error creating directory: " + outPath.getParent());
e.printStackTrace();
System.exit(1);
}
boatArray1 = new Boat[boatNames.length];
if(boatNames.length > 0){
try(BufferedWriter fileOut = Files.newBufferedWriter(outPath, Charset.forName("UTF-16"))){
for(j = 0 ; j < boatNames.length ; j++){
String delimiters = "[. ,]";
int limit = -1;
String[]tokens = boatNames[j].split(delimiters, limit);
for(k = 0 ; k < tokens.length ; ++k){
firstChar = tokens[k].charAt(0);
firstChar = Character.toUpperCase(firstChar);
char[] tokenArray = tokens[k].toCharArray();
String text = new String(tokenArray, 1, (tokenArray.length - 1) );
tokens[k] = firstChar + text;
result = result + tokens[k] + " ";
if(k != tokens.length - 1){
continue;
}else{
result = result.trim();
boatNames[k] = result;
result = " ";
}
}
firstLetter = boatNames[j].charAt(0);
if((firstLetter == 'B') || (firstLetter == 'C') || (firstLetter == 'N')){
boatArray1[j] = new RaceBoat();
}else{
boatArray1[j] = new SailBoat();
}
boatArray1[j].christenBoat(boatNames[j]);
}
System.out.println("\n");
for(l = 0 ; l < boatNames.length ; ++l){
secondLetter = Character.toUpperCase(boatNames[l].charAt(1));
if((secondLetter == 'A') || (secondLetter == 'E')){
if(l > 0){
fileOut.newLine();
}
fileOut.write(boatArray1[l].goFast());
}else{
if(l > 0){
fileOut.newLine();
}
fileOut.write(boatArray1[l].goSlow());
}
fileOut.newLine();
fileOut.write(boatArray1[l].launchBoat());
fileOut.newLine();
fileOut.write(boatArray1[l].whatIsBoatState());
fileOut.newLine();
}
boatArray2 = new Boat[3];
boatArray2[0] = new SailBoat();
boatArray2[1] = new RaceBoat("Endurance", true);
boatArray2[2] = new RaceBoat(false);
for(m = 0 ; m < boatArray2.length ; ++m){
fileOut.newLine();
fileOut.write(boatArray2[m].toString());
fileOut.newLine();
fileOut.write(boatArray2[m].launchBoat());
fileOut.newLine();
fileOut.write(boatArray2[m].whatIsBoatState());
fileOut.newLine();
}
fileOut.newLine();
fileOut.write("There are " + Boat.boatCount + " boats in the fleet this morning.");
}catch(IOException e){
System.err.println("Error writing outPath: " + outPath);
e.printStackTrace();
}
}else{
System.out.println("\n\n\nArgh!... you forgot to enter ship names scalawag!" +
"\n\n\n\tPlease try again!");
}
System.out.println("\nThe Fleet Registry is completed, press ENTER to continue.\n");
try{
System.in.read();
} catch(IOException e){
return;
}
}
}
Thank you everyone, I've entered the following:
if(boatNames != null){
boatArray1 = new Boat[boatNames.length];
if(boatNames.length > 0){
try(BufferedWriter fileOut = Files.newBufferedWriter(outPath, Charset.forName("UTF-16"))){
for(j = 0 ; j < boatNames.length ; j++){
String delimiters = "[. ,]";
int limit = -1;
String[]tokens = boatNames[j].split(delimiters, limit);
for(k = 0 ; k < tokens.length ; ++k){
firstChar = tokens[k].charAt(0);
firstChar = Character.toUpperCase(firstChar);
char[] tokenArray = tokens[k].toCharArray();
String text = new String(tokenArray, 1, (tokenArray.length - 1) );
tokens[k] = firstChar + text;
result = result + tokens[k] + " ";
if(k != tokens.length - 1){
continue;
}else{
result = result.trim();
boatNames[k] = result;
result = " ";
}
}
firstLetter = boatNames[j].charAt(0);
if((firstLetter == 'B') || (firstLetter == 'C') || (firstLetter == 'N')){
boatArray1[j] = new RaceBoat();
}else{
boatArray1[j] = new SailBoat();
}
boatArray1[j].christenBoat(boatNames[j]);
}
System.out.println("\n");
for(l = 0 ; l < boatNames.length ; ++l){
secondLetter = Character.toUpperCase(boatNames[l].charAt(1));
if((secondLetter == 'A') || (secondLetter == 'E')){
if(l > 0){
fileOut.newLine();
}
fileOut.write(boatArray1[l].goFast());
}else{
if(l > 0){
fileOut.newLine();
}
fileOut.write(boatArray1[l].goSlow());
}
fileOut.newLine();
fileOut.write(boatArray1[l].launchBoat());
fileOut.newLine();
fileOut.write(boatArray1[l].whatIsBoatState());
fileOut.newLine();
}
boatArray2 = new Boat[3];
boatArray2[0] = new SailBoat();
boatArray2[1] = new RaceBoat("Endurance", true);
boatArray2[2] = new RaceBoat(false);
for(m = 0 ; m < boatArray2.length ; ++m){
fileOut.newLine();
fileOut.write(boatArray2[m].toString());
fileOut.newLine();
fileOut.write(boatArray2[m].launchBoat());
fileOut.newLine();
fileOut.write(boatArray2[m].whatIsBoatState());
fileOut.newLine();
}
fileOut.newLine();
fileOut.write("There are " + Boat.boatCount + " boats in the fleet this morning.");
}catch(IOException e){
System.err.println("Error writing outPath: " + outPath);
e.printStackTrace();
}
}else{
System.out.println("\n\n\nArgh!... you forgot to enter ship names scalawag!" +
"\n\n\n\tPlease try again!");
}
System.out.println("\nThe Fleet Registry is completed, press ENTER to continue.\n");
try{
System.in.read();
} catch(IOException e){
return;
}
}
Now I'm getting the following error:
C:\Documents and Settings\Joe King\My Documents\418.85A Java\Project5>java Project5
Exception in thread "main" java.lang.NullPointerException
at Project5.main(Project5.java:424)
This doesn't make sense to me, in order to get to line 424 the boatNames array cannot be null because the length of boatNames was used several times before line 424. What am I missing?
Thanks

The variable is out of the try/catch, otherwise the compile error would be different. The problem is that the initialization is inside the try block, so that code after the try can't be sure the variable was initialized.
There are two ways to deal with this:
Initialize the variable when you declare it. Just using this would be enough:
String[] boatNames = null;
Move all the code that uses the variable inside the try block. This is often a good strategy, but only if your methods are small. In your case, I wouldn't recommend this, as your method is much too long. Now, if you could break your code up into shorter methods, then limiting the scope of the variable to a single try block would make good sense.

Before the try/catch block, initialize the array like this:
String[] boatNames = null;

You have declared your array outside try block
String[] boatNames;
It will be initialized under first try block
boatNames = new String[totalRead];
Issue is here boatArray1 = new Boat[boatNames.length];
Reason, your compiler has no way to know if boatNames initialization will be successful as there might be an exception and initialization will fail.
As part of your declaration you can do this:
String[] boatNames = null; // This will fix your immediate problem
but doing this may lead you to NullPointerException since your File read can fail.
To solve this do a null check on your array before you use it.
if(boatNames == null){
// I am not going to go further or will take corrective measures here
}

The compiler here considers the possibility that an exception might be raised in the try block even before boatNames is initialized hence it gives the compiler error might not have been initialized. The might is important here!
The ideal solution here would be to tweak your code structure and put
boatArray1 = new Boat[boatNames.length];
in the same try block!

Java File I/O help

I have a problem with my code. I need to do several operations on a log file with this structure:
190.12.1.100 2011-03-02 12:12 test.html
190.12.1.100 2011-03-03 13:18 data.html
128.33.100.1 2011-03-03 15:25 test.html
128.33.100.1 2011-03-04 18:30 info.html
I need to get the number of visits per month, number of visits per page and number of unique visitors based on the IP. That is not the question, I managed to get all three operations working. The problem is, only the first choice runs correctly while the other choices just return values of 0 afterwards, as if the file is empty, so i am guessing i made a mistake with the I/O somewhere. Here's the code:
import java.io.*;
import java.util.*;
public class WebServerAnalyzer {
private Map<String, Integer> hm1;
private Map<String, Integer> hm2;
private int[] months;
private Scanner input;
public WebServerAnalyzer() throws IOException {
hm1 = new HashMap<String, Integer>();
hm2 = new HashMap<String, Integer>();
months = new int[12];
for (int i = 0; i < 12; i++) {
months[i] = 0;
}
File file = new File("webserver.log");
try {
input = new Scanner(file);
} catch (FileNotFoundException fne) {
input = null;
}
}
public String nextLine() {
String line = null;
if (input != null && input.hasNextLine()) {
line = input.nextLine();
}
return line;
}
public int getMonth(String line) {
StringTokenizer tok = new StringTokenizer(line);
if (tok.countTokens() == 4) {
String ip = tok.nextToken();
String date = tok.nextToken();
String hour = tok.nextToken();
String page = tok.nextToken();
StringTokenizer dtok = new StringTokenizer(date, "-");
if (dtok.countTokens() == 3) {
String year = dtok.nextToken();
String month = dtok.nextToken();
String day = dtok.nextToken();
int m = Integer.parseInt(month);
return m;
}
}
return -1;
}
public String getIP(String line) {
StringTokenizer tok = new StringTokenizer(line);
if (tok.countTokens() == 4) {
String ip = tok.nextToken();
String date = tok.nextToken();
String hour = tok.nextToken();
String page = tok.nextToken();
StringTokenizer dtok = new StringTokenizer(date, "-");
return ip;
}
return null;
}
public String getPage(String line) {
StringTokenizer tok = new StringTokenizer(line);
if (tok.countTokens() == 4) {
String ip = tok.nextToken();
String date = tok.nextToken();
String hour = tok.nextToken();
String page = tok.nextToken();
StringTokenizer dtok = new StringTokenizer(date, "-");
return page;
}
return null;
}
public void visitsPerMonth() {
String line = null;
do {
line = nextLine();
if (line != null) {
int m = getMonth(line);
if (m != -1) {
months[m - 1]++;
}
}
} while (line != null);
// Print the result
String[] monthName = {"JAN ", "FEB ", "MAR ",
"APR ", "MAY ", "JUN ", "JUL ", "AUG ", "SEP ",
"OCT ", "NOV ", "DEC "};
for (int i = 0; i < 12; i++) {
System.out.println(monthName[i] + months[i]);
}
}
public int count() throws IOException {
InputStream is = new BufferedInputStream(new FileInputStream("webserver.log"));
try {
byte[] c = new byte[1024];
int count = 0;
int readChars = 0;
while ((readChars = is.read(c)) != -1) {
for (int i = 0; i < readChars; ++i) {
if (c[i] == '\n')
++count;
}
}
return count;
} finally {
is.close();
}
}
public void UniqueIP() throws IOException{
String line = null;
for (int x = 0; x <count(); x++){
line = nextLine();
if (line != null) {
if(hm1.containsKey(getIP(line)) == false) {
hm1.put(getIP(line), 1);
} else {
hm1.put(getIP(line), hm1.get(getIP(line)) +1 );
}
}
}
Set set = hm1.entrySet();
Iterator i = set.iterator();
System.out.println("\nNumber of unique visitors: " + hm1.size());
while(i.hasNext()) {
Map.Entry me = (Map.Entry)i.next();
System.out.print(me.getKey() + " - ");
System.out.println(me.getValue() + " visits");
}
}
public void pageVisits() throws IOException{
String line = null;
for (int x = 0; x <count(); x++){
line = nextLine();
if (line != null) {
if(hm2.containsKey(getPage(line)) == false)
hm2.put(getPage(line), 1);
else
hm2.put(getPage(line), hm2.get(getPage(line)) +1 );
}
}
Set set = hm2.entrySet();
Iterator i = set.iterator();
System.out.println("\nNumber of pages visited: " + hm2.size());
while(i.hasNext()) {
Map.Entry me = (Map.Entry)i.next();
System.out.print(me.getKey() + " - ");
System.out.println(me.getValue() + " visits");
}
}
Any help figuring out the problem would be much appreciated as I am quite stuck.

I didn't read the code thoroughly yet, but I guess you're not setting the read position back to the beginning of the file when you start a new operation. Thus nextLine() would return null.
You should create a new Scanner for each operation and close it afterwards. AFAIK scanner doesn't provide a method to go back to the first byte.
Currently I could also think of 3 alternatives:
Use a BufferedReader and call reset() for each new operation. This should cause the reader to go back to byte 0 provided you didn't call mark() somewhere.
Read the file contents once and iterate over the lines in memory, i.e. put all lines into a List<String> and then start at each line.
Read the file once, parse each line and construct an apropriate data structure that contains the data you need. For example, you could use a TreeMap<Date, Map<Page, Map<IPAdress, List<Visit>>>>, i.e. you'd store the visits per ip address per page for each date. You could then select the appropriate submaps by date, page and ip address.

The reset method of BufferedReader that Thomas recommended would only work if the file size is smaller than the buffer size or if you called mark with a large enough read ahead limit.
I would recommend reading throught the file once and to update your maps and month array for each line. BTW, you don't need a Scanner just to read lines, BufferedReader has a readLine method itself.
BufferedReader br = ...;
String line;
while (null != (line = br.readLine())) {
String ip = getIP(line);
String page = getPage(line);
int month = getMonth(line);
// update hashmaps and arrays
}