public static void main(String args[]){ JFrame f=new JFrame("JFrame Example"). Container c=f.getContentPane(). c.setLayout( new FlowLayout()). c.add(new JLabel("这是一个JFrame的一般示例!")). f.setSize(300,70). f.show().
f.addWindowLister(new WindowAdapter(){
public void windowClosing(WindowEvent e){ System.exit(0). }
}).
} }
编译结果如下: FrameTester.java:1: package javax.Swing does not exist import javax.Swing.*. ^ FrameTester.java:8: cannot resolve symbol symbol : class JFrame location: class FrameTester JFrame f=new JFrame("JFrame Example"). ^ FrameTester.java:8: cannot resolve symbol symbol : class JFrame location: class FrameTester JFrame f=new JFrame("JFrame Example"). ^ FrameTester.java:11: cannot resolve symbol symbol : class JLabel location: class FrameTester c.add(new JLabel("这是一个JFrame的一般示例!")). ^ 4 errors