VID 20141222 124349614

Simple java IDE in awt and swing.

• Copy code and save it as Main.java
• Compile file which generate main.calss
•  

  import java.awt.*;
  import java.awt.Color.*;
  import javax.swing.*;
  import java.awt.event.*;
  import java.io.*;
  import java.lang.*;
  
  
   class main implements ItemListener , WindowListener ,ActionListener
  {JFrame frame;
  Container c;
  JMenuBar menubar;
  JButton sub;
  JButton sub1;
  JMenu file1 ;
  JMenu file2 ;
  JMenu file3 ;
  JMenu file4 ;
  JMenuItem new1;
  JMenuItem open;
  JMenuItem save;
  JMenuItem save_as;
  JMenuItem exit;
  JMenuItem compile;
  JMenuItem run;
  JScrollPane scpane;
  JPanel penel;
   JTextArea ta;
  String spath;
  String filename;
  public main()
  {
  
  //creating GUI componnet
   frame=new JFrame("IDE");
   c=frame.getContentPane();
  c.setLayout(new BorderLayout());
  
  JOptionPane.showMessageDialog(frame, "Press OK to contenue ");//for dialog
  
  
  frame. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//set exit button
  //creating new GUI componets...
   menubar=new JMenuBar();
   sub=new JButton("sub");
   sub1=new JButton("sub1");
   ta=new JTextArea(10,10);
  
  ta.setLineWrap(true);
  
  //set text size...
  ta.setFont(  new Font("MS Outlook", 6, 20)  );
  //Font getFont()
  
  
  
  //set color in text area
  ta.setForeground(Color.red);
  //Color getForeground()
  
  
  
   file1 =new JMenu("file");
   file2 =new JMenu("edit");
   file3 =new JMenu("view");
   file4 =new JMenu("Run");
  
   new1=   new JMenuItem("New");
   open=   new JMenuItem("Open");
   save=   new JMenuItem("Save");
   save_as=new JMenuItem("Save as");
   exit=   new JMenuItem("Exit");
   compile=new JMenuItem("Compile");
   run=    new JMenuItem("Run");
  
   penel=new JPanel();
      scpane = new JScrollPane(ta); //scrollpane  and add textarea to scrollpane
  //add GUI component
  penel.add(sub);
  penel.add(sub1);
  c.add(penel);
  
  c.add(scpane);
  
  
  file1.add(new1);
  file1.add(open);
  file1.add(save);
  file1.add(save_as);
  file1.add(exit);
  file4.add(compile);
  file4.add(run);
  
  menubar.add(file1);
  menubar.add(file2);
  menubar.add(file3);
  menubar.add(file4);
  
  c.add(menubar);
  
  
  //resister
  
  
  sub.addActionListener(this);
  sub.addItemListener(this);
  //ta.addActionListener(this);
  new1.addActionListener(this);
  open.addActionListener(this);
  save.addActionListener(this);
  save_as.addActionListener(this);
  exit.addActionListener(this);
  compile.addActionListener(this);
  run.addActionListener(this);
  
  //set lyer in Frame
  c.add(scpane,BorderLayout.CENTER);
  //c.add(sub,BorderLayout.SOUTH);
  c.add(menubar,BorderLayout.NORTH);
  c.add(penel,BorderLayout.WEST);
  
  
  
  JFrame.setDefaultLookAndFeelDecorated(true);//.............
  
  
  
  
  //set size
  frame.setSize(800,600);
  //set visible
  frame.setVisible(true);
  }//constucter
  public void itemStateChanged(ItemEvent ie)
  {
  }
  
  
  
  
  public void actionPerformed(ActionEvent ae)
  {
  String str = ae.getActionCommand();
  String str1= ta.getText();
  String path;
  if(str=="Save")
  {
  
  
  JFileChooser input=new JFileChooser();
  
  int ret = input.showSaveDialog(null);
  if(ret==input.APPROVE_OPTION)
  {
  File set=input.getSelectedFile();
  filename= set.getName();
   path = input.getSelectedFile().getAbsolutePath();//get path of file.....
  spath=path;
  System.out.println(path);
  
  
  
  try{
   FileWriter fstream = new FileWriter(path);
          BufferedWriter out = new BufferedWriter(fstream);
          out.write(str1);
          out.close();
  }
  catch(Exception e)
  {
  e.printStackTrace();
  }
  
  
  
  
  
  
  
  
  
  
  
  }
  
  
  
  
  }
  else if(str=="Save as")
  {
  
     JFileChooser input=new JFileChooser();
  
  int ret = input.showOpenDialog(null);
  if(ret==input.APPROVE_OPTION)
  {
  File set=input.getSelectedFile();
   path = input.getSelectedFile().getAbsolutePath();//get path of file.....
  spath=path;
  filename= set.getName();
  System.out.println(path + filename);
  }
  }
  else if (str=="Exit")
  {
  System.exit(0);
  }
  
  
  else if(str=="Open")
  {
     JFileChooser input=new JFileChooser();
  
  int ret = input.showOpenDialog(null);
  if(ret==input.APPROVE_OPTION)
  {
  File set=input.getSelectedFile();
  //set text__--__NULL
  ta.setText("");
  
   path = input.getSelectedFile().getAbsolutePath();//get path of file.....
  filename= set.getName();
  String str7=filename.replace(".java","");
  System.out.println(path + str7);
  spath=path;
  try
  {
  
  
  
  
   
      FileReader read =new FileReader(path);   
         BufferedReader in =new BufferedReader(read);
    String line;
       while((line=in.readLine())!=null)
              {
                 //line=in.readLine();
                // ta.setPage(line);
                 ta.append(line + "\n");
               }
  }
  catch(Exception e2)
  {
  System.out.println("\u0007");
  }
  }
  
  }
  
  //to run
  
  
  else if(str=="Compile")
  {String cmd= "javac " + spath;
  try{
  
  Process pr1 =Runtime.getRuntime().exec(cmd);
  
  
  //Process pr1 =Runtime.getRuntime().exec("javac"  +  spath);
  }
  catch(Exception e)
  {//e.}
  }
  }
  else if(str == "Run")
  {
  String file=filename.replace(".java"," ");
  String opath=spath.replace(filename,"");
  String gopath;
  if(opath=="c:\\"||opath=="d:\\"||opath=="e:\\"||opath=="f:\\"||opath=="G:\\"||opath=="H:\\"||opath=="I:\\")
  {
  
   gopath=opath.replace(":\\",":");
  
  }
  else{
  gopath= "cd " + opath;
  
  }
  String cmd1=  gopath + "\n" ;
  String cmd2= "java.exe  " + file + "\n ";
  System.out.println(cmd1);
  String cm="cmd /c calc";
  
  
  try
  {
  
  File file1 = new File("b.bat");
  
  
  if(!file1.exists())
  {
  file1.createNewFile();
  }
  
  FileWriter fw =new FileWriter(file1.getAbsoluteFile());
  BufferedWriter bw =new BufferedWriter(fw);
  bw.write(cmd1);
  bw.write(cmd2);
  bw.close();
  
  
  
  
  
    ProcessBuilder builder = new ProcessBuilder(
   "cmd.exe","/c", "start b.bat" );
  
          builder.redirectErrorStream(true);
    
       Process p = builder.start();
  
          BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
    
       String line;
  
       while (true) {
      
         line = r.readLine();
            
   if (line == null)
  { break; }
       
        System.out.println(line);
       
    }
  
  
  
  
  
  
  
  
  
  /*ProcessBuilder builder1 = new ProcessBuilder("cmd.exe","/c","start",cmd1,"java",file);
  
  
  
  System.out.println("\u0007" + "\u0007");
  
  
  
  
  
  
  builder1.redirectErrorStream(true);
  
  
  
  Process p1 =builder1.start();
  BufferedReader r= new BufferedReader(new InputStreamReader(p1.getInputStream()) );
  String line;
  while(true)
  {
  line=r.readLine();
  if(line==null)
  {break;}
  System.out.println(line);
  }
  
  */
  
  
  
  /*Process pr1 =Runtime.getRuntime().exec(cmd1);
  Process pr2 =Runtime.getRuntime().exec(cmd2);
  Process pr3=Runtime.getRuntime().exec(cm);*/
  }
  catch(Exception e)
  {}
  
  }
  
  else
  {}
  
  
  
  
  
  
  
  }
  
  //window listener
  public void windowDeactivated(WindowEvent we)
  {
  
  }
  
  
  //
  public void windowActivated(WindowEvent we)
  {System.exit(0);
  }
  
  
  
   public void windowClosed(WindowEvent we)
  {}
  
  
  
  public void windowClosing(WindowEvent we)
  {System.exit(0);
  }
  
  
  public void windowIconified(WindowEvent we)
  {System.exit(0);}
  
  
  
   public void windowDeiconified(WindowEvent we)
  {System.exit(0);}
  
  
  
  public void windowOpened(WindowEvent we)
  {System.exit(0);}
  
  
  
   
  public static void main(String args[])
  {new main();
  }
  
  
  
  }

  • Copy main.c and compile the same
  • main.exe and main.java should be in one foleder or diractory
  • Run main.exe and enjoy the IDE.

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