test/jdk/java/awt/Frame/ShownOnPack/ShownOnPack.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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import java.awt.EventQueue;
import java.awt.Frame;

/*
 * @test
 * @bug 6525850
 * @summary Iconified frame gets shown after pack()
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual ShownOnPack
*/

public class ShownOnPack {

    private static final String INSTRUCTIONS = """
            This test creates an invisible and iconified frame that should not become visible.

            If you observe the window titled 'Should NOT BE SHOWN' in the taskbar,
            press FAIL, otherwise press PASS
            """;

    static Frame frame;

    public static void main(String[] args) throws Exception {
        PassFailJFrame shownOnPackInstructions = PassFailJFrame
                .builder()
                .title("ShownOnPack Instructions")
                .instructions(INSTRUCTIONS)
                .rows(5)
                .columns(50)
                .build();

        EventQueue.invokeAndWait(() -> {
            frame = new Frame("Should NOT BE SHOWN");
            frame.setExtendedState(Frame.ICONIFIED);
            frame.pack();
        });

        try {
            shownOnPackInstructions.awaitAndCheck();
        } finally {
            EventQueue.invokeAndWait(() -> frame.dispose());
        }
    }
}