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import javax.swing.JButton;import javax.swing.JFrame;public class B { B(){ JFrame jf=new JFrame(); jf.setLayout(null); JButton jb=new JButton("ç¡®å®"); jb.setBounds(25, 20, 60, 20); jf.add(jb); jf.setSize(200,100);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jf.setVisible(true); } public static void main(String[] args) { new B(); }}è¿è¡ç»æï¼
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