jdk/test/jdk/java/awt/Clipboard/ClipRWTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 4177171 4180145 4180148
 * @summary Can't copy to clipboard
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual ClipRWTest
 */

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.TextField;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;

public class ClipRWTest {
    private static final String INSTRUCTIONS = """
            1. Type some text in the text field and press Copy Text.
            2. Switch to a _native_ application (e.g. Notepad) and paste the text in
            3. Verify the text that is pasted matches what you typed in the Java window
            4. In the native app, type some new text and copy it
            5. Switch back to the test frame and press Paste Text
            6. Verify the text that is pasted matches what you typed in the native app
            """;

    public static void main(String[] args) throws Exception {
        PassFailJFrame.builder()
                .title("ClipRWTest Instructions")
                .instructions(INSTRUCTIONS)
                .columns(40)
                .testUI(ClipFrame::new)
                .build()
                .awaitAndCheck();
    }

    private static class ClipFrame extends Frame {
        TextField   field =new TextField(50);
        Button      copyText = new Button("Copy Text");
        Button      pasteText = new Button("Paste Text");
        Clipboard   clipboard;

        public ClipFrame() {
            super("ClipRWTest 4177171");
            setLayout(new FlowLayout());

            clipboard = getToolkit().getSystemClipboard();

            add(field);
            add(copyText);
            add(pasteText);

            copyText.addActionListener(
                    ev -> {
                        String text = field.getText();
                        try {
                            clipboard.setContents(new StringSelection(text), null);
                        } catch (Exception ex) {
                            ex.printStackTrace();
                        }
                    }
            );

            pasteText.addActionListener(
                    ev -> {
                        String text = "";
                        try {
                            text = (String) clipboard.getContents(null)
                                    .getTransferData(DataFlavor.stringFlavor);
                        } catch (Exception ex) {
                            ex.printStackTrace();
                        }
                        field.setText(text);
                    }
            );

            pack();
        }
    }
}