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I am currently writing a game in Java, where words in a string will have to be all changed to equal 5 characters a word.
eg. I am writing in Java
Iamwr iting inJav a
I wonder if anyone knows how I would do this?
First remove spaces between words.
Then split that resulting String to length with 5.
Add a space after every 5 character.
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How can I cut a string string by words according to a length
String text = "Hello world welcome";
The maximum size of a row must be 15 characters, if you used the substring method I would stay like this
Hello wordl wel
come
and it should not be like that, it should be like that
Hello wordl
welcome
Use Apache Commons Text WordUtils.wrap() method:
String out = WordUtils.wrap("Hello world welcome", 15);
System.out.println(out);
will output:
Hello world
welcome
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I want to mask the string before the first white space
Eg. "123 test1" mask to xxtest1
"12/6786 test2" mask to xxtest2
Using string replace all with regex
I tried this ^.*?[^\s]*\s and it seems to be working to your case.
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How does substring method work internally and how can it create memory issue ?
How can we solve it?
Prior to Java 7 udate 6, substring used to return a view on the original string. So imagine you had a String of 1,000,000 characters and called s.substring(0, 1) because you are only interested in the first character, the original string would have stayed in memory.
Since Java 7u6 substring returns a new string which prevents that issue.
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I need to define specific numbers out of an array of 52 numbers so I can assign them an image (yes I am creating an applet). I don't think that code is necessary for any of you to answer this question. Any help would be fantastic.
I'm not sure I understand what you're asking. You can set an item in an array this way:
myArray[4] = 52;
That would set array index #4 (remember it's zero based so it's actually the 5th item) to the value of 52. Is that what you're looking for?
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I have this text:
1 A Maths
And i would like to get only Maths.
I don´t know about regular expressions.
Can any one help me, please?
Thanks
Why don't you split the string ?
String chain="A Maths";
String[] array=chain.split(" ");
String number=array[0];
String course=array[1];
...
How to split a string in Java