test/jdk/java/awt/TextField/SetPasswordTest/SetPasswordTest.java

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import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.InvocationTargetException;

/*
 * @test
 * @bug 4084454
 * @summary Make sure that you can set the text in a "password mode"
 *          text field and that it echoes as the current echo char.
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual SetPasswordTest
 */

public class SetPasswordTest extends Frame implements ActionListener {
    private String setText = "Set text";
    private String getText = "Get text";
    private TextField tfPassword;

    static final String INSTRUCTIONS = """
            The purpose of this test is to ensure that when using a textField for
            password entry that text set programmatically is not shown in the clear.

            We also test "pasting" text into the text field.

            1.  Press the "Set Text" button
                Text should appear as '*' chars
              - if the string "secret" appears then the test is failed.
            2.  Use the mouse to select (highlight) all the text and press the DELETE key
            3.  Use the system's copy/paste functionality to copy a text string from the
                desktop or this window, and paste it into the text field.
            4.  Text should appear in the text field as '*' chars
              - if the string you pasted appears then the test is failed.
            5.  press the "Get Text" button and the string you pasted
                should be printed in the log area
              - if it prints echo symbols instead the test is failed.
            """;

    public SetPasswordTest() {
        setLayout(new FlowLayout());
        tfPassword = new TextField("Initial text", 30);
        tfPassword.setEchoChar('*');
        add(tfPassword);

        Button b1 = new Button(setText);
        b1.addActionListener(this);
        add(b1);

        Button b2 = new Button(getText);
        b2.addActionListener(this);
        add(b2);
        pack();
    }

    public void actionPerformed(ActionEvent evt) {
        String ac = evt.getActionCommand();
        if (setText.equals(ac)) {
            tfPassword.setText("secret");
        }

        if (getText.equals(ac)) {
            PassFailJFrame.log("Text: \"" + tfPassword.getText() + "\"");
        }
    }

    public static void main(String[] args) throws InterruptedException,
            InvocationTargetException {
        PassFailJFrame.builder()
                .title("Set Password Test")
                .testUI(SetPasswordTest::new)
                .instructions(INSTRUCTIONS)
                .rows((int) INSTRUCTIONS.lines().count() + 1)
                .columns(40)
                .logArea()
                .build()
                .awaitAndCheck();
    }
}