我在java中创建了一个简单的JFrame
。但是我也希望在打开真正的.jar文件的同时打开开发人员控制台。在第8行是我想在控制台窗口中输出的文本,该文本应该从JFrame
开始。
代码:
import javax.swing.JFrame;
public class Launcher extends JFrame {
private static final long serialVersionUID = 1L;
public static void main(String[] args) {
new Launcher().setVisible(true);
System.out.println("Started Launcher...");
}
private Launcher() {
super("DevCity13 - Launcher (Alpha)");
setSize(600, 600);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}
答案 0 :(得分:3)
您始终可以显示自己的控制台,该控制台输出写入System.out的内容:
import java.awt.Color;
import java.awt.Font;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
public class Launcher extends JFrame {
private static final long serialVersionUID = 1L;
private static class Console {
private final JFrame frame;
public Console() {
frame = new JFrame();
final JTextArea textArea = new JTextArea(24, 80);
textArea.setBackground(Color.BLACK);
textArea.setForeground(Color.LIGHT_GRAY);
textArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
System.setOut(new PrintStream(new OutputStream() {
@Override
public void write(int b) throws IOException {
textArea.append(String.valueOf((char) b));
}
}));
frame.add(textArea);
}
public void init() {
frame.pack();
frame.setVisible(true);
}
public JFrame getFrame() {
return frame;
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Console console = new Console();
console.init();
Launcher launcher = new Launcher();
launcher.setVisible(true);
console.getFrame().setLocation(
launcher.getX() + launcher.getWidth()
+ launcher.getInsets().right, launcher.getY());
System.out.println("Started Launcher...");
}
});
}
private Launcher() {
super("DevCity13 - Launcher (Alpha)");
setSize(600, 600);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}
答案 1 :(得分:0)
您只需在运行.jar
时启用Java控制台。为此,请按照官方文档here上的步骤操作。它可能会根据您的操作系统而改变一点,但这就是想法。