Name: idR10193 Date: 11/21/2001


Please see the sample below that shows how call to
"Component add(String name, Component comp)" method of Container class
leads to unexpected IllegalArgumenException.

Sample code:
============add.java (Sample1)===============================
import java.awt.*;

public class add {

    public static void main(String argv[]) {
        GridBagLayout gbl = new GridBagLayout();
        Container parent = new Container();
        parent.setLayout(gbl);

        Component comp = new Component(){};

        parent.add("component", comp);
    }
}
============ end of add.java =========================
javac add.java
~/bugs
java add
Exception in thread "main" java.lang.IllegalArgumentException:
cannot add to layout: constraints must be a GridBagConstraint
        at java.awt.GridBagLayout.addLayoutComponent(GridBagLayout.java:605)
        at java.awt.Container.addImpl(Container.java:485)
        at java.awt.Container.add(Container.java:313)
        at add.main(add.java:12)
~/bugs

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