下面这段代码运行时怎么不能显示出JMenu呢????
import java.awt.Container;import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;public class TestTabbed extends JFrame{
public static void main(String [] args){
JFrame frame = new JFrame("TestTabbed");
/*Container c = frame.getContentPane();
JTabbedPane tabbedPane = new JTabbedPane(SwingConstants.BOTTOM);
c.add(tabbedPane);//对,这是可以加进来,那,那怎么才能新建一个Tab呢??
*/
//加File试试
JMenuBar m = new JMenuBar();
frame.setJMenuBar(m);
JMenu fileM = new JMenu("File");
JMenuItem newItem =fileM.add("New");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(100,120,150,150);
frame.setVisible(true);
}
}
import java.awt.Container;import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;public class TestTabbed extends JFrame{
public static void main(String [] args){
JFrame frame = new JFrame("TestTabbed");
/*Container c = frame.getContentPane();
JTabbedPane tabbedPane = new JTabbedPane(SwingConstants.BOTTOM);
c.add(tabbedPane);//对,这是可以加进来,那,那怎么才能新建一个Tab呢??
*/
//加File试试
JMenuBar m = new JMenuBar();
frame.setJMenuBar(m);
JMenu fileM = new JMenu("File");
JMenuItem newItem =fileM.add("New");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(100,120,150,150);
frame.setVisible(true);
}
}
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;public class TestTabbed extends JFrame{
public static void main(String [] args){
JFrame frame = new JFrame("TestTabbed");
/*Container c = frame.getContentPane();
JTabbedPane tabbedPane = new JTabbedPane(SwingConstants.BOTTOM);
c.add(tabbedPane);//对,这是可以加进来,那,那怎么才能新建一个Tab呢??
*/
//加File试试
JMenuBar m = new JMenuBar();
JMenu fileM = new JMenu("File");
JMenuItem newItem =fileM.add("New");
m.add(fileM);
frame.setJMenuBar(m);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(100,120,150,150);
frame.setVisible(true);
}
}
中午打球后有些累,把这个给忘了.