Name: ooR10001 Date: 03/06/2001


SwingUtilities.calculateInnerArea(JComponent c, Rectangle r) method throws
NullPointerException when passed JComponent is null. This behavior contradicts
with current javadoc which says:

----------------------------
public static Rectangle calculateInnerArea(JComponent c,
                                           Rectangle r)

      Stores the position and size of the inner painting area of the specified
      component in r and returns r. The position and size specify the bounds
      of the component, adjusted so as not to include the border area (the
      insets). This method is useful for classes that implement painting code.
      Parameters:
            c - the JComponent in question; if null, this method returns null
                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
            r - the Rectangle instance to be modified; may be null
----------------------------

This is a test example which shows this bug:
---------------------
import javax.swing.SwingUtilities;
import java.awt.Rectangle;

public class test {

    public static void main(String[] args) {
      Rectangle r = SwingUtilities.calculateInnerArea(null, new Rectangle());
    }

}
---------------------


Test's output:
------------------------
Exception in thread "main" java.lang.NullPointerException
        at
javax.swing.SwingUtilities.calculateInnerArea(SwingUtilities.java:1724)
        at test.main(test.java:7)
-----------------------

It needs to be fixed.

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