CREATING,DELETING AND RENAMIING FILES USING CLASS 'File':

CREATING A NEW FILE
import java.io.*;
class demo
{
public static void main(String[] args)throws Exception{
File file=new File("hi.txt");
if(file.exists()){
System.out.println("file already exists");}
else {file.createNewFile();
System.out.println("file created successfully");}
}};
DELETING A FILE
import java.io.*;
class demo
{
public static void main(String[] args)throws Exception{
File file=new File("hi.txt");
if(file.exists()){
file.delete();
System.out.println("file deleted");}
else {
System.out.println("file does not exist");}
}};
RENAMING A FILE
import java.io.*;
class demo
{
public static void main(String[] args)throws Exception{
File file=new File("hi.txt");
File file1=new File("hello.txt");
if(file.exists()){
file.renameTo(file1);
System.out.println("file rename successful");}
else {
System.out.println("file can not be renamed");}
}};