出口纺织品标识报检提供所报检纺织品的全套标签、吊牌等实物和包装唛头内容。 ( )
参考答案:对
有名合同的概念
请完善程序(程序文件名:Java_3.java)并进行调试。请在下画线处填入正确内容,然后删除下画线。请勿删除注释行和其他已有的语句内容。 [题目要求] 在点击“Exit”按钮和窗口右上角的关闭按钮时,可以关闭窗口。 程序运行后的界面如下图所示。
源程序: import java.awt.*; import java.awt. (1) .*; public class Java_3 implements ActionListener, (2) Frame f; Button be,bw,bs,bn,bc; public void create() f= (3) ; be=new Button("East"); bw=new Button( (4) ); bs=new Button("South"); bn=new Button("North"); bc=new Button("Exit"); f.add(be, (5) ); f.add(bw,"West"); f.add(bs,"South"); f.add(bn,"North"); f.add(be,"Center"); bc.addActionListener(this); //为按钮注册监听器 f.addWindowListener(this); //为按钮注册监听器 f.setSize(200,200); f.setVisible( (6) ); public static void main(String args[]) Java_3 fa=new Java_3(); fa.create(); public void actionPerformed(ActionEvent e) System.exit(0); //实现窗口关闭功能 ; public void windowOpened(WindowEvent e) public void windowClosing(WindowEvent e) System.exit(0); //实现窗口关闭功能 ; public void windowClosed(WindowEvent e) public void windowIconified(WindowEvent e) public void windowDeiconified(WindowEvent e) public void windowActivated(WindowEvent e) public void windowDeactivated(WindowEvent e)