Question

· Write a Java program to extract a portion of a character string and print the extracted string.
Assume that in characters extracted, starting with the nth character,​

Answer 1

Answer:

import java.io.*;

class Extract

{

publicstaticvoid main(String args[])

{

String s,str,substr;

int extract,start,len,check;

try{

BufferedReader obj = new BufferedReader(new InputStreamReader

(System.in));

System.out.print("Enter String : ");

System.out.flush();

str=obj.readLine();

len=str.length();

System.out.print("Enter Starting position to extract characters : ");

System.out.flush();

s=obj.readLine();

start=Integer.parseInt(s);

start=start-1;

if(start<0 || start>len)

{

System.out.println("INVALID POSITION");

System.exit(1);

}

System.out.print("Enter how many characters you want to extract

: ");

System.out.flush();

s=obj.readLine();

extract=Integer.parseInt(s);

check=extract+start;

if(check<0 || check>len )

{

System.out.println("TRYING TO EXTRACT INVALID POSITION");

System.exit(1);

}

substr=str.substring(start,check);

System.out.println("\nEXTRACTED STRING IS "+substr);

}

catch(Exception e) {}

}

}