I can't seem to pass the value of a string variable into a string array

[mathias]

Hi, I have encountered a hair raising problem: I can't seem to pass the value of a string variable into a string array. It's very frustrating when I poll the array and get null as far as the eye can see. The code follows:

Code:

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.String.*;

public class SntncArray extends Applet implements ActionListener
{
TextField theSntnc = new TextField(60);
Button pressMe=new Button("parse to array");
String fillIt;
String checkIt;
Label fillMe;
String[] sntncArray= new String[30];


public void init()
{
add(theSntnc);
add(pressMe);
pressMe.addActionListener(this);
}

public void actionPerformed(ActionEvent pressMe)
{
fillIt=new String (theSntnc.getText());
fillMe=new Label("FillIt"+fillIt);
add (fillMe);
invalidate();
validate();
brkSntnc(fillIt);
}

public void brkSntnc(String sntnc)
{
int x=0;
int wrdCnt=0;
int myLen;
while (x!=-1)
{
myLen=sntnc.length();
x=sntnc.indexOf(" ");
sntncArray[wrdCnt]=sntnc.substring(0,x-1);
wrdCnt++;
System.out.println("Before:"+sntnc);
sntnc=sntnc.substring(x+1,myLen);
System.out.println("After:"+sntnc);
System.out.println("Array at "+wrdCnt+" is:"+sntncArray[wrdCnt]);
}
}

}

Basically I'm trying to write a class which accepts input and breaks the words in the input into an array, one array slot for each word. So far, as I said before,

Code:

sntncArray[wrdCnt]=sntnc.substring(0,x-1);

always equals null, in spite of the fact that

Code:

sntnc.substring(0,x-1);

is a valid string.

I'm clearly missing something very obvious, but I can't figure out what. I know that strings are objects and not primitives and so I can't use them as primitives (I think) but how can I pass the value of a given string into an array? I even tried making a string to hold the value of

Code:

sntnc.substring(0,x-1);

("passer") and tried

Code:

sntncAray[wrdCnt]=passer;

but with the same result:Null.
Thanks.

[hardwired]

always equals null
Move "wrdCnt++;" to the bottom of the loop. It is incrementing to the next (null) element before you get to the println statement.

Code:

//  <applet code="SA" width="400" height="200"></applet>
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.String.*;

public class SA extends Applet implements ActionListener
{
    TextField theSntnc = new TextField(60);
    Button pressMe=new Button("parse to array");
    String fillIt;
    String checkIt;
    Label fillMe;
    String[] sntncArray= new String[30];

    public void init()
    {
        System.out.println(getLayout().getClass().getName());
        setLayout(new BorderLayout());
        add(theSntnc, "North");
        add(pressMe, "South");
        pressMe.addActionListener(this);
    }

    public void actionPerformed(ActionEvent pressMe)
    {
        fillIt=new String (theSntnc.getText());
        fillMe=new Label("FillIt"+fillIt);
        add (fillMe);
        invalidate();
        validate();
        brkSntnc(fillIt);
        printArray();
    }

    public void brkSntnc(String sntnc)
    {
        int x=0;
        int wrdCnt=0;
        int myLen;
        while(x != -1)
        {
            myLen=sntnc.length();
            x=sntnc.indexOf(" ");
            if(x > -1)
                sntncArray[wrdCnt]=sntnc.substring(0, x);
            else
                sntncArray[wrdCnt]=sntnc;
            System.out.println("Before:"+sntnc);
            sntnc=sntnc.substring(x+1,myLen);
            System.out.println("After:"+sntnc);
            System.out.println("Array["+wrdCnt+"] is:"+sntncArray[wrdCnt]);
            wrdCnt++;
        }
    }

    private void printArray() {
        System.out.print("sntncArray = [");
        for(int j = 0; j < sntncArray.length; j++) {
            if(sntncArray[j] == null)
                continue;
            System.out.print(sntncArray[j]);
            if(j < sntncArray.length-1)
                System.out.print(", ");
        }
        System.out.print("]\n");
    }
}