searchpro.java

JAVA产品存储系统

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
/*
 * @autor Amadan gong
 * @2008.11.17
 * @查找产品
 */
public class searchpro implements ActionListener{
	 	JFrame z=null;//类属性
	    static JTextField tF1=new JTextField();

	    @SuppressWarnings("deprecation")
		public searchpro(JFrame f){ //构造方法，从其调用方法中获得对话框的父窗口
	        z = new JFrame("search a production"); //产生一modal对话框
	        Container dialogPane = z.getContentPane();//接下来注意添加各个组件
	        dialogPane.setLayout(new GridLayout(2,2));        
	        dialogPane.add(new JLabel("please input the production's ID  : ",SwingConstants.CENTER)); 
	        dialogPane.add(tF1);

	        JButton b1 = new JButton("ok");
	        dialogPane.add(b1);
	        JButton b2 = new JButton("no");
	        dialogPane.add(b2);              
	        b1.addActionListener(this);   //为两按钮增加事件监听器
	        b2.addActionListener(this);
	        z.setBounds(100,150,500,130);
	        z.show();
			z.pack();
			z.setVisible(true);
			z.addWindowListener(new WindowAdapter(){//为窗口增加监听器
				public void windowClosing(WindowEvent e){//
					System.exit(0);
				}
			});
		}

	    public void actionPerformed(ActionEvent e) {	    	
	    	String cmd=e.getActionCommand();
	    	if(cmd.equals("ok")){
	    			try {
	    		        int ID=Integer.parseInt(tF1.getText());
						new out(z,ID);
					} catch (IOException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
	    	}
	    	else if(cmd.equals("no")){
	    		System.exit(0);
	    	}
	    }

	    }
	
class out extends JFrame implements ActionListener{
	JFrame fq=null;
	public out(JFrame z,int ID)throws IOException{
		fq=new JFrame("information");
		Container contentPane=fq.getContentPane();
		JPanel panel=new JPanel();
		JTextArea area=new JTextArea(20,80);
		//读取
    	FileReader fr=new FileReader("production.txt");
        BufferedReader br=new BufferedReader(fr);
        String line=br.readLine(); 
        while(line.indexOf("ID: "+ID)==-1)
        {
        	line=br.readLine();
       		}
      //  br.close();
       // fr.close();
		 area.append(line+'\n');
		 panel.add(area);
		 contentPane.add(panel,BorderLayout.CENTER);
		 
		 fq.pack();
		 fq.setVisible(true);
		 fq.addWindowListener(new WindowAdapter(){
		 public void windowClosing(WindowEvent e){
					System.exit(0);
				}
			});
		}
	public void actionPerformed(ActionEvent arg0) {
		}
	}










class MyInput 
{ 
public static String readString() 
{ 
BufferedReader br 
=new BufferedReader(new InputStreamReader(System.in),1); 
String string=" "; 
try 
{ 
string=br.readLine(); 
} 
catch (IOException ex) 
{ 
System.out.println(ex); 
} 

return string; 
} 
public static int readInt() 
{ 
return Integer.parseInt(readString()); 
} 

public static float readFloat() 
{ 
return Float.parseFloat(readString()); 
} 
}