Re: How does a Java CLASS replace a C++ STRUCT?

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#7993

From: John Pruitt
Date: Tue, 08 May 2001 00:26

42 lines
1675 bytes

That basically the way I've been trying to do it, but I get a NullPointerException.
It's like creating an object test does not initialize the sub class.

Here's the test program:

classTest.java
 public class classTest  {

   public static void main(String[] args) {

   test tt = new test();
  
   tt.qType=1234;
   for (int i=0;i<10;i++) {
        tt.ssList[i].sType=i;
        for (int x=0;i<17;i++)
           tt.ssList[i].sDesc[x]=(byte)(i+65);
      }
	
    }
	
 }

test.java
  public class test {
	int qType;
	int qVers;
	int qMem;
	ss[] ssList = new ss[10];
	int qFinal;
	test() {}
	}

ss.java
  public class ss {
	int sType;
	byte[] sDesc=new byte[17];
	int sValue;
	}

(Note: If I use private in ss.java like you indicated, I get compile errors)

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