我知道这听起来像一个简单的问题,但我正在用按钮等进行简单的文本冒险,而我无法弄清楚如何将我的Jpanel添加到我的JFrame中。我的JPanel有一堆按钮和图形和东西,如果这有所作为。我提供了以下代码。 frame panel = new frame();是扩展JPanel的另一个类。我知道它被称为“框架”令人困惑,因为我曾经让它扩展了JFrame。无论如何,我的代码不会像其应该那样从其他类生成按钮,图形等。谢谢,
package sonomaroller;
import javax.swing.*;
import java.awt.*;
import static javax.swing.JFrame.*;
public class SonomaRoller extends JFrame {
public static Dimension size = new Dimension(550,550); //Dimension of Frame
public static String title = "Sonoma Roller v0.00" ;
public SonomaRoller(){
setTitle(title);
setSize(size);
setResizable(false);
setLocationRelativeTo(null); // null centers window on screen
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
System.out.println("hello?");
//setLayout(null);
setVisible(true);
}
public static void main(String[] args) {
SonomaRoller object1=new SonomaRoller();
frame panel=new frame();
}
}
答案 0 :(得分:0)
尝试
SonomaRoller object1=new SonomaRoller();
frame panel=new frame();
object1.getContentPane().add(panel);
或只是简单地
object1.add(panel);
来自:JFrame#getContentPane() 和Container#add(Component)
以下是一些有用的代码:
import java.awt.*;
import javax.swing.*;
public class MyFrame extends JFrame {
public MyFrame() {
add(new MyPanel());
setSize(640, 480);
}
public static void main(String[] args) throws Exception {
SwingUtilities.invokeAndWait(new Runnable() {
@Override public void run() {
new MyFrame().setVisible(true);
}
});
}
}
class MyPanel extends JPanel {
@Override protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.fillOval(20, 20, 80, 80);
}
}
答案 1 :(得分:0)
也许这样......?
package sonomaroller;
import javax.swing.*;
import java.awt.*;
import javax.swing.JFrame.*;
public class SonomaRoller extends JFrame {
public static Dimension size = new Dimension(550,550); //Dimension of Frame
public static String title = "Sonoma Roller v0.00" ;
public SonomaRoller(){
setTitle(title);
setSize(size);
setResizable(false);
setLocationRelativeTo(null); // null centers window on screen
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
System.out.println("hello?");
//setLayout(null);
setVisible(true);
frame panel=new frame();
setContentPane(panel);
}
public static void main(String[] args) {
SonomaRoller object1=new SonomaRoller();
}
}
答案 2 :(得分:0)
这就是我通常的做法:
public class SonomaRoller extends JFrame {
public SonomaRoller(){
setLayout(new BorderLayout(0, 0));
JPanel newPanel = new JPanel();
getContentPane().add(newPanel);
}
}
答案 3 :(得分:0)
这就是问题:
frame panel=new frame();
将此行代替上述代码:
Frame frame = new Frame();
Panel panel = new Panel();
frame.add(panel);