程式語言 - Java - SWT - Hello, world!

main.java

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Label;

public class main {
    public static void main(String[] args) {
        Display display = new Display();
        
        Shell shell = new Shell(display);
        shell.setText("main");
        shell.setSize(320, 240);

        Label label = new Label(shell, SWT.CENTER);
        label.setText("Hello, world!");
        label.setBounds(0, 0, 100, 100);

        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }

        display.dispose();
    }
}

編譯、執行

$ java -version
    java version "24.0.1" 2025-04-15

$ javac -cp swt.jar main.java
$ java -cp .:swt.jar main