Removing Spaces from a String without using in-build method

 

import java.util.*;

public class RemoveSpacesInString {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("INPUT A STRING");

String in = sc.nextLine();

String out = ""; // Output String

// Converting String to Char Array

char[] inArr = in.toCharArray();

for (int i = 0; i < inArr.length; i++) {

if ((inArr[i] != ' ') && (inArr[i] != '\t')) {

// concatenating every character with out String

out = out + inArr[i];

}

// print output String

}

System.out.print(out);

}

}