大哥你们来帮忙呀-------ping IP area

Question

ping   t=new  ping();//?????这是个什么类？ping类在哪有写？

Answer 1

这个程序错在什么地方呢。是不是没反应呢。
         public  static void  main(String args[]){
                JButton   button=new   JButton("the ping here");//你这个button又没有真正放上你的窗体上面，为什么要在这里建一个JButton呢。
                ping   t=new  ping();
                t.init();   
                xx   bu=new   xx();
                button.addActionListener(bu);//这个是消息响应的吧。
　　　　　　　你这个事件在哪里触发呢。        } 
应该是在ping类的init()里面:
xx bu = new xx();
button.addActionListener(bu);而main里只要这样
public  static void  main(String args[]){
                ping   t=new  ping();
                t.init();   
        } 试一试吧。

Answer 2

还有你的xx类里，为什么重新建这么多个Component呢，
JTextField   url1=new   JTextField(10);
JTextField   url2=new   JTextField(3);
JTextField   url3=new   JTextField(3);
String  str1=url1.getText();   //这时str1为空的字符串
String  str2=url2.getText();   //str2同上
String  str3=url1.getText();   //str3同上
在你下面的处理中没有什么意义的在你的这个类里的所有的Component都是重新申请的。
你是要在窗体里获得你的输入然后输出吧。
那么你的这两个类就要进行数据交流啦。

Answer 3

import java.awt.*;
import  javax.swing.*;
import  java.awt.event.*;
import  java.io.*;public  class  ping extends JFrame {
        JFrame   jframe=new  JFrame("ping the area IP");
        JPanel    jp=new   JPanel();
        JLabel    label1 = new JLabel("url1");
        JLabel    label2 = new JLabel("url2");
        JLabel    label3 = new JLabel("url3");
        JTextField   url1=new   JTextField(10);
        JTextField   url2=new   JTextField(3);
        JTextField   url3=new   JTextField(3);
        JTextArea   area=new   JTextArea(10,25);
        JButton   button=new   JButton("the ping here");
        String  str1=url1.getText();
        String  str2=url2.getText();
        String  str3=url3.getText();
         boolean shouldFill = true;
         
         public  static void  main(String args[]){
                ping   t=new  ping();
                t.init();   
              
        }   
       
        void  init(){
                    Container checkPanel = getContentPane();
                    GridBagLayout gridbag = new GridBagLayout();
                    GridBagConstraints c = new GridBagConstraints();
                    checkPanel.setLayout(gridbag);
                    if (shouldFill) {
                           c.fill = GridBagConstraints.HORIZONTAL; 
                      }
                    
                     c.gridx = 0;
                     c.gridy = 0;
                     gridbag.setConstraints(label1, c);
                     checkPanel.add(label1);                      
                     c.gridx = 1;
                     c.gridy = 0;
                     gridbag.setConstraints(url1, c);
                     checkPanel.add(url1);                      c.gridx = 2;
                      c.gridy = 0;
                      gridbag.setConstraints(label2, c);
                      checkPanel.add(label2);                       c.gridx = 3;
                       c.gridy = 0;
                      gridbag.setConstraints(url2, c);
                      checkPanel.add(url2);                      c.gridx = 4;
                       c.gridy = 0;
                      gridbag.setConstraints(label3, c);
                      checkPanel.add(label3);                      c.gridx = 5;
                       c.gridy = 0;
                      gridbag.setConstraints(url3, c);
                      checkPanel.add(url3);                       c.gridx = 6;
                       c.gridy = 0;
                      gridbag.setConstraints(button, c);
                      checkPanel.add(button);                       c.gridx = 0;
                       c.gridy = 1;
                       c.weightx=1;
                       c.weighty=1;
                       gridbag.setConstraints(area, c);
                       checkPanel.add(area);
                       button.addActionListener(this); 
                
                      jframe.getContentPane().add(checkPanel);
                      jframe.pack();
                      jframe.setVisible(true);
       }             //   button.addActionListener(this); 
       public  void   actionPerformed(ActionEvent  ev)  
       {
        /*  
            JTextField   url1=new   JTextField(10);
              JTextField   url2=new   JTextField(3);
              JTextField   url3=new   JTextField(3);
              String  str1=url1.getText();
              String  str2=url2.getText();
              String  str3=url1.getText();
              JTextArea   area=new   JTextArea(10,25);
        */
                try{ 
                          String  s;               
                          InputStreamReader    ir;
                          BufferedReader     in;
                          for(int i=Integer.parseInt(str2);i<=Integer.parseInt(str3);i++)
                          {
                                     //   String  s1= "218.191.84.";
                                     String cmd="ping "+str1+i+" -n 1";
                                     //    String cmd= "ping "+s1+i" -p;
                                     Process   xx=Runtime.getRuntime().exec(cmd);
                                     InputStream  ou=xx.getInputStream();
                                     ir=new    InputStreamReader(ou);
                                     in=new    BufferedReader(ir);
                                      if((s=in.readLine())!=null)
                                      {
                                             area.append(str1+i+" OK!\n");
                                      }
                                      else
                                      {
                                             area.append(str1+i+" ERROR!\n");
                                       }
                           }
                 }
                 catch(Exception e)
                 {
                    System.out.println(e);
                 }
        }
}

Answer 4

你的ping 类要实现ActionListener接口.
即：public class ping extend JFrame implenments ActionListener
这样应该就OK了吧！

Answer 5

还有InputStream、InputStreamReader 和 BufferedReader 用完时要关闭
InputStream  ou=xx.getInputStream();
ir=new    InputStreamReader(ou);
in=new    BufferedReader(ir);
if((s=in.readLine())!=null)
{
   area.append(str1+i+" OK!\n");
}
else
{
   area.append(str1+i+" ERROR!\n");
}
ou.close();
ir.close();
in.close();

Answer 6

import java.awt.*;
import  javax.swing.*;
import  java.awt.event.*;
import  java.io.*;public  class  ping extends JFrame implements ActionListener {
        JFrame   jframe  =new  JFrame("ping the area IP");
        JPanel    jp = new   JPanel();
        JLabel    label1 = new JLabel("url1");
        JLabel    label2 = new JLabel("url2");
        JLabel    label3 = new JLabel("url3");
        JTextField   url1=new   JTextField(10);
        JTextField   url2=new   JTextField(3);
        JTextField   url3=new   JTextField(3);
        JTextArea   area=new   JTextArea(10,25);
        JButton   button=new   JButton("the ping here");        boolean shouldFill = true;
         
         public  static void  main(String args[]){
                ping   t=new  ping();
                t.init();   
              
        }   
       
        void  init(){
                    Container checkPanel = getContentPane();
                    GridBagLayout gridbag = new GridBagLayout();
                    GridBagConstraints c = new GridBagConstraints();
                    checkPanel.setLayout(gridbag);
                    if (shouldFill) {
                           c.fill = GridBagConstraints.HORIZONTAL; 
                      }
                    
                     c.gridx = 0;
                     c.gridy = 0;
                     gridbag.setConstraints(label1, c);
                     checkPanel.add(label1);                      
                     c.gridx = 1;
                     c.gridy = 0;
                     gridbag.setConstraints(url1, c);
                     checkPanel.add(url1);                      c.gridx = 2;
                      c.gridy = 0;
                      gridbag.setConstraints(label2, c);
                      checkPanel.add(label2);                       c.gridx = 3;
                       c.gridy = 0;
                      gridbag.setConstraints(url2, c);
                      checkPanel.add(url2);                      c.gridx = 4;
                       c.gridy = 0;
                      gridbag.setConstraints(label3, c);
                      checkPanel.add(label3);                      c.gridx = 5;
                       c.gridy = 0;
                      gridbag.setConstraints(url3, c);
                      checkPanel.add(url3);                       c.gridx = 6;
                       c.gridy = 0;
                      gridbag.setConstraints(button, c);
                      checkPanel.add(button);                       c.gridx = 0;
                       c.gridy = 1;
                       c.weightx=1;
                       c.weighty=1;
                       gridbag.setConstraints(area, c);
                       checkPanel.add(area);
                       button.addActionListener(this); 
                
                      jframe.getContentPane().add(checkPanel);
                      jframe.pack();
                      jframe.setVisible(true);
       }             //   button.addActionListener(this); 
       public  void   actionPerformed(ActionEvent  ev)  
       {
             //注意
              String  str1=url1.getText();  //在这里获得JTextField里的文本才行的，否则str1、str2、str3都为空的。
              String  str2=url2.getText();
              String  str3=url3.getText();
                try{ 
                          String  s;               
                          InputStreamReader    ir;
                          BufferedReader     in;
                          for(int i=Integer.parseInt(str2);i<=Integer.parseInt(str3);i++)
                          {
                                     //   String  s1= "218.191.84.";
                                     String cmd="ping "+str1+i+" -n 1";
                                     //    String cmd= "ping "+s1+i" -p;
                                     Process   xx=Runtime.getRuntime().exec(cmd);
                                     InputStream  ou=xx.getInputStream();
                                     ir=new    InputStreamReader(ou);
                                     in=new    BufferedReader(ir);
                                      if((s=in.readLine())!=null)
                                      {
                                             area.append(str1+i+" OK!\n");
                                      }
                                      else
                                      {
                                             area.append(str1+i+" ERROR!\n");
                                       }
                                       ou.close();
                                       ir.close();
                                       in.close();
                           }
                 }
                 catch(Exception e)
                 {
                    System.out.println(e);
                 }
        }
}

Answer 7

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.*;public class ping
    extends JFrame {
        JPanel contentPane;
        JScrollPane jScrollPane1 = new JScrollPane();
        JTextArea jTextArea1 = new JTextArea();
        JButton jButton1 = new JButton();
        JLabel jLabel1 = new JLabel();
        JTextField jTextField1 = new JTextField(10);
        JLabel jLabel2 = new JLabel();
        JTextField jTextField2 = new JTextField(3);
        JLabel jLabel3 = new JLabel();
        JTextField jTextField3 = new JTextField(3);        //Construct the frame
        public ping() {
                enableEvents(AWTEvent.WINDOW_EVENT_MASK);
                try {
                        jbInit();
                }
                catch (Exception e) {
                        e.printStackTrace();
                }
        }        //Component initialization
        private void jbInit() throws Exception {
                contentPane = (JPanel)this.getContentPane();
                contentPane.setLayout(null);
                this.setLocale(java.util.Locale.getDefault());
                this.setResizable(false);
                this.setSize(new Dimension(400, 300));
                this.setTitle("Ping一个D段");
                jScrollPane1.setBounds(new Rectangle(9, 66, 371, 195));
                jTextArea1.setText("");
                jButton1.setBounds(new Rectangle(239, 20, 87, 27));
                jButton1.setText("开始Ping");
                jButton1.addActionListener(new ping_jButton1_actionAdapter(this));
                jLabel1.setText("A段");
                jLabel1.setBounds(new Rectangle(13, 8, 38, 22));
                jTextField1.setText("");
                jTextField1.setBounds(new Rectangle(13, 34, 47, 22));
                jLabel2.setText("B段");
                jLabel2.setBounds(new Rectangle(80, 8, 38, 22));
                jTextField2.setText("");
                jTextField2.setColumns(3);
                jTextField2.setBounds(new Rectangle(80, 34, 47, 22));
                jLabel3.setToolTipText("");
                jLabel3.setText("C段");
                jLabel3.setBounds(new Rectangle(147, 8, 38, 22));
                jTextField3.setText("");
                jTextField3.setBounds(new Rectangle(147, 34, 47, 22));
                contentPane.add(jScrollPane1, null);
                jScrollPane1.getViewport().add(jTextArea1, null);
                contentPane.add(jTextField2, null);
                contentPane.add(jLabel2, null);
                contentPane.add(jLabel1, null);
                contentPane.add(jTextField1, null);
                contentPane.add(jLabel3, null);
                contentPane.add(jTextField3, null);
                contentPane.add(jButton1, null);
        }        //Overridden so we can exit when window is closed
        protected void processWindowEvent(WindowEvent e) {
                super.processWindowEvent(e);
                if (e.getID() == WindowEvent.WINDOW_CLOSING) {
                        System.exit(0);
                }
        }        void jButton1_actionPerformed(ActionEvent e) {
                //注意
                String str1 = jTextField1.getText(); //在这里获得JTextField里的文本才行的，否则str1、str2、str3都为空的。
                String str2 = jTextField2.getText();
                String str3 = jTextField3.getText();                if (str1.equals("") || str2.equals("") || str3.equals("")) {
                        JOptionPane.showMessageDialog(null, "请您输入您要查询的IP段",
                            "出错",
                            JOptionPane.ERROR_MESSAGE);
                        return;
                }                String s;
                InputStreamReader ir;
                BufferedReader in;
                for (int i = Integer.parseInt(str2); i <= Integer.parseInt(str3);
                     i++) {
                        //   String  s1= "218.191.84.";
                        String cmd = "ping " + str1 + i + " -n 1";
                        //    String cmd= "ping "+s1+i" -p;
                        Process xx = null;
                        try {
                                xx = Runtime.getRuntime().exec(cmd);
                                InputStream ou = xx.getInputStream();
                                ir = new InputStreamReader(ou);
                                in = new BufferedReader(ir);
                                if ( (s = in.readLine()) != null) {
                                        jTextArea1.append(str1 +"."+ i + " OK!\n");
                                }
                                else {
                                        jTextArea1.append(str1 + "."+i +
                                            " ERROR!\n");
                                }
                                ou.close();
                                ir.close();
                                in.close();
                        }
                        catch (IOException ex1) {
                        }
                }
        }
}class ping_jButton1_actionAdapter
    implements java.awt.event.ActionListener {
        ping adaptee;        ping_jButton1_actionAdapter(ping adaptee) {
                this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent e) {
                adaptee.jButton1_actionPerformed(e);
        }
}

Answer 8

import javax.swing.UIManager;
import java.awt.*;
import javax.swing.*;
import java.util.*;public class main {
        boolean packFrame = false;
        static Font f = new Font("Dialog", Font.PLAIN, 12);
        static Enumeration keys = UIManager.getLookAndFeelDefaults().keys();        //Construct the application
        public main() {
                ping frame = new ping();
                //Validate frames that have preset sizes
                //Pack frames that have useful preferred size info, e.g. from their layout
                if (packFrame) {
                        frame.pack();
                }
                else {
                        frame.validate();
                }
                //Center the window
                Dimension screenSize = Toolkit.getDefaultToolkit().
                    getScreenSize();
                Dimension frameSize = frame.getSize();
                if (frameSize.height > screenSize.height) {
                        frameSize.height = screenSize.height;
                }
                if (frameSize.width > screenSize.width) {
                        frameSize.width = screenSize.width;
                }
                frame.setLocation( (screenSize.width - frameSize.width) / 2,
                                  (screenSize.height - frameSize.height) / 2);
                frame.setVisible(true);
        }        //Main method
        public static void main(String[] args) {
                try {
                        UIManager.setLookAndFeel(UIManager.
                                                 getSystemLookAndFeelClassName());
                        while (keys.hasMoreElements()) {
                                Object key = keys.nextElement();
                                if (UIManager.get(key)instanceof Font) {
                                        UIManager.put(key, f);
                                }
                        }                }
                catch (Exception e) {
                        e.printStackTrace();
                }
                new main();
        }
}