public « Integer « Java Data Type Q&A

  1. Java Data Type Q&A
  2. Integer
  3. public




1. public void add(int a, int... b) {     stackoverflow.com

Could someone show me a practical a use of the ... array method delcaration? Is it just a way to declare an optional parameter instead of passing null value? 

public void add(int a, ...

2. passing percent to public int method    java-forums.org

I believe the author of the text I am using made an error in the problem he has presented. The problem asks to write a main method that includes a percentage of increase and pass that to an int(parameters) method and recalculate. Below is the entire code I have so far. Is there a solution? The problem seems confusing to me. ...

3. How do i return nothing in a "public int getNothing()" method ?    forums.oracle.com

Darned ... Thanks for this reply anyway! I've come across this problem severall times , but always found an alternative solution ... but in this case it's kinda necessary ... Should i throw an error, or is there a return statement like null ? if none of those, is there a comon procedure to bypass it that you guys might know ...

4. public ints are not working in method displayDice    forums.oracle.com

/** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ // private void initComponents() { jScrollPane1 = new javax.swing.JScrollPane(); jTextArea1 = new javax.swing.JTextArea(); jButton1 = new javax.swing.JButton(); jButton2 = new ...

5. public int indexOf(int ch, int fromIdx) doesn't work for some decimal value    forums.oracle.com

int badDecimal = 131; int idxBadDecimal = strHasDecimal131.indexOf( badDecimal, 0); System.out.println( "index of Bad Decimal: " + idxBadDecimal ); The output is: index of Bad Decimal -1 int badDecimal = 192; int idxBadDecimal = strHasDecimal192.indexOf( badDecimal, 0); System.out.println( "index of Bad Decimal: " + idxBadDecimal ); The output is: index of Bad Decimal: 11

6. public int read(byte b[])    forums.oracle.com

thanks for your answer, now I'm certain and perhaps I can get a recommendation for the following... In order to do a particular search&replace (not as simple as it sounds since there are several algorithms that I need to include) in a 1 GB file, I'm loading the file into a byte array and doing the logics of the program, however ...