import java.awt.*;

import java.awt.event.*;

class MyFrame extends Frame implements ActionListener

{

Label l1;

Button b1;

int i;

MyFrame()

{

super("Exapmle of ActionListener");

l1=new Label("                           ");

b1=new Button("Click me");

b1.addActionListener(this);

i=0;

add(b1);

add(l1);

addWindowListener(new WindowAdapter() {

            public void windowClosing(WindowEvent we) {

                System.exit(0);

            }

        });

setLayout(new FlowLayout());

setSize(500,500);

setVisible(true);

}

public void actionPerformed(ActionEvent e)

{

i++;

l1.setText("Button Clicked: "+ Integer.toString(i));

}

}

public class MyActionListener

{

public static void main(String args[])

{

new MyFrame();

}

}

import java.awt.*;
import java.awt.event.*;
class MyFrame extends Frame implements ActionListener
{
	Label l1;
	Button b1;
	int i;
	MyFrame()
	{
		super("Exapmle of ActionListener");
		l1=new Label("                           ");
		b1=new Button("Click me");
		b1.addActionListener(this);
		i=0;
		
		add(b1);
		add(l1);
		
		addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.exit(0);
            }
        });
		
		setLayout(new FlowLayout());
		setSize(500,500);
		setVisible(true);
	}
	public void actionPerformed(ActionEvent e)
	{
		i++;
		l1.setText("Button Clicked: "+ Integer.toString(i));
	}
}
public class MyActionListener
{
	public static void main(String args[])
	{
		new MyFrame();
	}
}

/*

Example - Hello.txt  contains -   Hello welcome to Java. 

                 Country.txt contains - India is my country.

                merge.txt  contains - Hello welcome to Java. India is my country.

*/

 import java.io.*;

import java.util.*;

class Merge

{

File f1,f2,f3;

Merge()

{

Scanner s=new Scanner(System.in);

System.out.print("Enter path of 1st File: ");   

String path1=s.nextLine();   // to get path of 1st file

System.out.print("Enter file name of 1st File: "); 

String file1=s.nextLine();   // to get name of file

System.out.print("Enter path of 2nd File: ");

String path2=s.nextLine();   // to get path of 2nd file

System.out.print("Enter file name of 2nd File: ");

String file2=s.nextLine();   // to get file name

System.out.print("Enter destination path : ");

String desp=s.nextLine();    // to get designation path

System.out.print("Enter destination file name: ");

String desf=s.nextLine();   // to get file name

// File is a class and it's constructor have 2 parameters File(path_of_file , file_name) 

                f1=new File(path1,file1);

f2=new File(path2,file2);

f3=new File(desp,desf);

}

void disp()

{

try

{

if(f3.exists())

{

                            // FileInputStream is used to read the data from files in byte

FileInputStream fin=new FileInputStream(f3);

System.out.print("Content of merged file");

while(true)

{

int i=fin.read(); // read method is use to read single character from file

if(i==-1)   // if there is no other characters in file read method return -1

{

break;

}

System.out.print((char)i);   //  to print  character

}

fin.close();  // to close the file

}

}

catch(Exception e)

{

System.out.println(e);

}

}

void merging()

{

try

{

FileInputStream fin=new FileInputStream(f1);

                         //  FileOutputStream  is used to write the data from files in byte

FileOutputStream fout=new FileOutputStream(f3);

while(true)

{

int i=fin.read();

if(i==-1)

break;

fout.write(i);

}

fin.close();

fin=new FileInputStream(f2);

// fout=new FileOutputStream(f3);

while(true)

{

int i=fin.read();

if(i==-1)

break;

fout.write(i);

}

fin.close();

fout.close();

}

catch(Exception e)

{

System.out.print(e);

}

}

}

class TestMerge

{

public static void main(String args[])

{

Merge obj=new Merge();

obj.merging();

obj.disp();

}

}

 import java.io.*;

import java.util.*;

class Copy

{

File f1,f2;

Copy()

{

Scanner s=new Scanner(System.in);

System.out.print("Enter source path : "); 

String path1=s.nextLine(); //to get source path of file

System.out.print("Enter source file : ");

String file1=s.nextLine(); //to get source file name

System.out.print("Enter destination path : ");

String path2=s.nextLine(); //to get desitanation path

System.out.print("Enter destination file : ");

String file2=s.nextLine(); //to get destination file name

                // File is a class and it's constructor have 2 parameters File(path_of_file , file_name)

f1=new File(path1,file1);   

f2=new File(path2,file2);

}

void display()

{

try

{

                       // FileInputStream is used to read the data from files in byte

FileInputStream fin=new FileInputStream(f2);  

while(true)

{

int i=fin.read();  // read method is use to read single character from file

if(i==-1)   // if there is no more characters in file read method return -1

{

break;

}

System.out.print((char)i);   // to print character in a file

}

fin.close(); // to close the file

}

catch(Exception e)

{

System.out.println(e);

}

}

void copycontent()

{

try

{

FileInputStream fin=new FileInputStream(f1);

                        //  FileOutputStream  is used to write the data from files in byte

FileOutputStream fout=new FileOutputStream(f2);  

while(true)

{

int i=fin.read();

if(i==-1)

{

break;

}

fout.write(i);

}

}

catch(Exception e)

{

System.out.println(e);

}

}

}

class TestCopy

{

public static void main()

{

Copy obj=new Copy();

obj.copycontent();

obj.display();

}

}