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I need to check for line breaks in csv for every entry using java. I have no idea how to do it. Can anybody help? thanks!
Try this in your java source from which you are reading the csv.
String col = columnName.replaceAll("[\r\n]", "");
reportColumn.put( "column", col );
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I'm taking a java class rn and my teacher did this
System.out.println("A\tB\tC\tD\tE\tF");
to see A B C D E F
but as you can see in my screenshot, it doesn't work..!!!
how can I solve this. pls help me
you can give tab space in java easily. "\t" is the space sequence in java programming. Below i have given some examples:
Example 1:
System.out.print("Happy\tBirthday");
The output:
Happy Birthday
Example 2:
System.out.print("java\tprogramming");
The output:
Java programming.
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If I were to print
System.out.println(-Math.abs(-14));
would it print -14 or would it disregard the negative sign on the outside of the Math.abs code?
You will get -14. Please go try your code first to see its behaviour
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Sonar reports this bug: Correctness - Method passes an incorrect number of parameters to an SLF4J or Slf4j2 logging statement.
log.info("{}", e);
What should i do to fix it? Thanks
I think the correct way is the following code:
log.info("{}", e.getMessage());
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I need to update an ArrayList if object exists based on id in the object.
Thanks in Advance
Arraylist have a mArrayList.contains() method and than you can get the element index by looping and update item if you are requesting to update in the ArrayList and not somewhere else :
mArrayList.set(yourdesiredIndexOfTypeInt , desiredValueOrObject);
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So there will be a text field that I disable using the textField.setEnabled(false) method. However later on in the code I want to enable this text field back again. textField.setEnabled(true) does not work at this moment.
How should I address this problem?
Try to create a Jtextfield like instance variables