Name: asC58863 Date: 02/18/98


java.awt.swing.JTable.JTable(Vector data, Vector columnNames) throws
unexpected java.lang.NullPinterException if data is null. It should
throw java.lang.IllegalArgumentException instead.

(see JavaDoc Comment )
"public JTable(Vector data,
              Vector columnNames)
..............
Throws:
            IllegalArgumentException - if data is null or if the number of
            columns in data does not equal the number of
            names in columnNames. "
            
This exception is thrown starting with JDK1.2-Beta3E build only.

Here is the test demonstrating the bug:
------------------ Test.java -----------------
import java.awt.swing.*;
import java.util.*;

class Test {
  public static void main(String[] argv) {
    Vector data = new Vector();
    data.addElement(null);
    Vector columnNames = new Vector();
    try {
     JTable table = new JTable(data,columnNames);
     System.out.println(" IllegalArgumentException does not thrown ");
    } catch(IllegalArgumentException e){
      System.out.println(" thrown "+e);
    } catch(Exception e2){
      System.out.println(" IllegalArgumentException does not thrown ");
      System.out.println(" but "+e2+" has been thrown ");
    }
   
    System.exit(0);
  }
}

-------------- Output from the test -----------------
:\>/set/java/JDK1.2-Beta3E/solaris/bin/java Test
  IllegalArgumentException does not thrown
  but java.lang.NullPointerException has been thrown
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