example111.java

能让java 不在dos下运行 很符合人们的需求和习惯

import java.awt.*;
import java.io.*;
import java.awt.event.*;
public class  Example111
{ public static void main(String args[])
  {JDK f=new JDK();
  }
}
  class JDK extends Frame implements ActionListener,Runnable
{ Thread compiler=null;
  Thread run_prom=null;
 boolean bn=true;
CardLayout mycard;
 Panel p=new Panel();
File  file_saved=null;
 TextArea input_text=new TextArea(),
compiler_text=new TextArea(),
 dos_out_text= new TextArea();
 Button button_input_text,button_compiler_text,
button_compiler,button_run_prom,button_see_doswin;
TextField input_file_name_text=new TextField("输入编译的文字.java");
TextField run_file_name_text=new TextField("输入应用程序主类的名字");
JDK()
   {super("Java 编程小程序");
   mycard=new CardLayout();
 compiler= new Thread(this);
 run_prom=new Thread(this);
button_input_text=new Button("程序输入区");
 Button button_compiler_text =new Button("编译结果区");
button_compiler= new Button("编译程序");
button_run_prom=new Button("运行应用程序");
button_see_doswin=new Button("查看流System输入的信息");
 p.setLayout(mycard);
p.add("input",input_text);
p.add("compiler",compiler_text);
p.add("dos",dos_out_text);
add(p,"Center");
add(button_see_doswin,"South");
compiler_text.setBackground(Color.pink);
Panel p1=new  Panel();
p1.setLayout(new GridLayout(4,2));
p1.add(new Label("输入程序: "));
p1.add(button_input_text);
p1.add(new  Label("翻译结果:"));
p1.add(button_compiler_text);
p1.add(input_file_name_text);
p1.add(button_compiler);
p1.add(run_file_name_text);
p1.add(button_run_prom);
add(p1,BorderLayout.NORTH);
button_input_text.addActionListener(this);
button_compiler_text.addActionListener(this);
button_compiler.addActionListener(this);
button_run_prom.addActionListener(this);
button_see_doswin.addActionListener(this);
addWindowListener(new WindowAdapter()
                {public  void windowClosing(WindowEvent e)
                {System.exit(0);
                                     }
                             });
setBounds(100,120,700,360);
setVisible(true);
validate();
}
 public  void actionPerformed(ActionEvent e)
  {if(e.getSource()==button_input_text)
  { mycard.show(p,"input");
  }
   else if(e.getSource()==button_compiler_text)
   {mycard.show(p,"compiler");
  }
else if(e.getSource()==button_see_doswin)
{ if(!(compiler.isAlive()))

    {compiler=new Thread(this);
   }
 try{compiler.start();}
   catch(Exception eee){}
mycard.show(p,"compiler");
}
else if (e.getSource()==button_run_prom)
 {  if(!(run_prom.isAlive()))
{run_prom=new Thread(this);
}
try{run_prom.start();
    }
 catch(Exception eee){}
mycard.show(p,"dos");
}
}
 public void run()
  { if(Thread.currentThread()==compiler)
    {compiler_text.setText(null);
  String temp=input_text.getText().trim();
byte buffer[]=temp.getBytes();
int b=buffer.length;
String file_name=input_file_name_text.getText().trim();
 try{ file_saved=new File(file_name);
      FileOutputStream writefile=new FileOutputStream(file_saved);
  writefile.write(buffer,0,b);
  writefile.close();
}
catch(IOException e5)
  {System.out.println("Erro ");
  }
 try{Runtime ce=Runtime.getRuntime();
      InputStream in=ce.exec("javac"+file_name).getErrorStream();
     BufferedInputStream bin=new BufferedInputStream(in);
     byte shuzu[]=new byte[100];
     int n;boolean bn=true;
     while((n=bin.read(shuzu,0,100))!=-1)
         { String s=null;
         s=new String(shuzu,0,n);
        compiler_text.append(s);
         
       if(s!=null)bn=false;
     }
if(bn)
    {compiler_text.append(" 编译正确");
    }
}

catch(IOException e1){}
}
else if (Thread.currentThread()==run_prom)
 {dos_out_text.setText(null);
 try{ Runtime ce=Runtime.getRuntime();
 String path= run_file_name_text.getText().trim();
InputStream in =ce.exec("java"+path).getInputStream();
BufferedInputStream  bin=new BufferedInputStream(in);
byte zu[]=new byte[150];
 int m;String s=null;
while((m=bin.read(zu,0,150))!=-1)
 { s= new String(zu,0,m);
 dos_out_text.append(s);
  }
}
catch(IOException e1){}
}
}
}