Name: asC58863 Date: 06/17/99


Two swing symmetric methods: Utilities.getRowStart() and
Utilities.getRowEnd() throw unexpected NullPointerException.

Here is the example demonstrating the bug:
------------------ Test.java -----------------
import javax.swing.text.BadLocationException;
import javax.swing.text.JTextComponent;
import javax.swing.text.Utilities;
import javax.swing.JTextArea;

class Test {

    public static void main(String[] argv) {
        JTextComponent comp = new JTextArea( "Document text");

        try {
            Utilities.getRowStart( comp, 2);
            System.out.println("getRowStart: NPE has not been thrown");
        } catch(BadLocationException ble) {
            System.out.println("getRowStart: Exception "+ble);
        } catch(NullPointerException npe) {
            System.out.println("getRowStart: Unexpected NPE has been thrown ");
            npe.printStackTrace();
        }

        try {
            Utilities.getRowEnd( comp, 2);
            System.out.println("getRowEnd: NPE has not been thrown");
        } catch(BadLocationException ble) {
            System.out.println("getRowEnd: Exception "+ble);
        } catch(NullPointerException npe) {
            System.out.println("getRowEnd: Unexpected NPE has been thrown ");
            npe.printStackTrace();
        }
        System.exit(0);
    }
}
----------------- output -----------------------------
java full version "JDK-1.3-F"
getRowStart: Unexpected NPE has been thrown
java.lang.NullPointerException
        at javax.swing.text.Utilities.getRowStart(Utilities.java, Compiled Code)
        at Test.main(Test.java, Compiled Code)
getRowEnd: Unexpected NPE has been thrown
java.lang.NullPointerException
        at javax.swing.text.Utilities.getRowEnd(Utilities.java, Compiled Code)
        at Test.main(Test.java, Compiled Code)
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