Calling function

[Rob Hunter]

How do I reclare an int array, call this function, and receive the return value into the int array? Was trying a few things out and keep getting errors when compiling.

sampleProgram.java:20: incompatible types
found   : java.util.ArrayList<java.lang.Integer>
required: int
                  int [] xAxis = new int[] { assignInt(xStr) };
                                                      ^
1 error

public void paint(Graphics g) {        
     String [] xStr = (this.getParameter("xpts")).split("~");
     String [] yStr = (this.getParameter("ypts")).split("~");
     int [] xAxis = new int[] { assignInt(xStr) }; // last attempt I tried
......
......
......
     //---- wanted to use both array here ----
     g.drawPolygon(new int [] {25, 145, 25, 145, 25}, new int [] {25, 25, 145, 145, 25}, 5);
}

private ArrayList<Integer> assignInt(String [] strSplit) {
      ArrayList<Integer> axisValues = new ArrayList<Integer>();
      for (int loopVal=0;loopVal<strSplit.length;loopVal++) {
            axisValues.add(Integer.parseInt(strSplit[loopVal]));
      } 
      return axisValues;
}

>

[Roberto Perillo]

Howdy, Rob!

How about this one:

public class IntegerArray {
    public static void main(String [] args) {
        List<Integer> list = assignInt(new String [] {"1", "2", "3"});
        Integer [] ints = list.toArray(new Integer[0]);
        for (Integer i : ints) {
            System.out.println("i: " + i);   
        }
    }

    private static List<Integer> assignInt(String [] strSplit) {
        ArrayList<Integer> axisValues = new ArrayList<Integer>();
        for (int loopVal = 0; loopVal < strSplit.length; loopVal++) {
            axisValues.add(Integer.parseInt(strSplit[loopVal]));
        }
        return axisValues;
    }
}

[Rob Hunter]

Hi Roberto, Thanks for the message. One thing though. If I were to try and use :

     List<Integer> list = assignInt((this.getParameter("xpts")).split("~"));   
     Integer [] xAxis = list.toArray(new Integer[0]);  
     list = assignInt((this.getParameter("ypts")).split("~"));   
     Integer [] yAxis = list.toArray(new Integer[0]);
.....
.....
.....
     g.drawPolygon(xAxis, yAxis, yAxis.length); 

I get the following error when trying to compile. This is probably a very basic call on your part but I'm not sure what the issue is here. Could you take a look and see if you can determine the cause? Thanks again, really appreciate the help.

sampleClass.java:25: cannot find symbol
symbol  : method drawPolygon(java.lang.Integer[],java.lang.Integer[],int)
location: class java.awt.Graphics
                      g.drawPolygon(xAxis, yAxis, yAxis.length);
                       ^
1 error

[Rob Spoor]

Why does assignInt return an ArrayList<Integer>, and not an int[]?

int [] xAxis = assignInt(xStr);
...
private int[] assignInt(String[] strSplit) {
      int[] axisValues = new int[strSplit.length];
      for (int loopVal = 0; loopVal < strSplit.length; loopVal++) {
            axisValues[loopVal] = Integer.parseInt(strSplit[loopVal]);
      } 
      return axisValues;
}

[Roberto Perillo]

Howdy, Rob!

Champ, I think that, in your scenario, the most appropriate decision would be to follow my good buddy Rob Prime's suggestion. Instead of returning ArrayList<Integer>, your assignInt method could return int []. This would ease a lot your work.

[Rob Spoor]

Roberto Perillo wrote:Howdy, Rob!

Howdy!

[Roberto Perillo]

[Campbell Ritchie]

Roberto Perillo wrote:Howdy, Rob!. . .

And we now have somebody on this thread who isn't called Rob

[Roberto Perillo]

Campbell Ritchie wrote:And we now have somebody on this thread who isn't called Rob