queryframe.java

是一个简化的学校教职工管理系统

import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class QueryFrame extends JFrame {
      public String sql;
      JLabel jl;
      JTextArea jtext;
      JButton jb_query,jb_again;
      public QueryFrame(){
    	  
    	  
    	  jl=new JLabel("请输入SQL查询语句：");
    	  jtext=new JTextArea();
    	  jb_query=new JButton("查询");
    	  jb_again=new JButton("重来");
    	  
    	  JPanel jp1=new JPanel(new GridLayout(2,1));
    	  JPanel jp2=new JPanel();
    	  jp1.add(jl);jp1.add(jtext);
    	  jp2.add(jb_query);
    	  jp2.add(jb_again);
    	  Container c=this.getContentPane();
    	  c.setLayout(new GridLayout(2,1));
    	  c.add(jp1);c.add(jp2);
    	  
    	  jb_again.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO Auto-generated method stub
				if(arg0.getActionCommand().equals("重来")){
					
					jtext.setText("");
				}
			}
    		  
    		  
    	  });
    	  setTitle("使用 SQL 语句查询，定制您的要求！");
    	  setSize(200,100);
    	  setVisible(true);
    	  this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    	  
    	  
      }
}