Live Demo

import java.io.IOException;

public class StringReverserThroughStack {

private String input;

private String output;

public StringReverserThroughStack(String in) {

input = in;

}

public String doRev() {

int stackSize = input.length();

Stack theStack = new Stack(stackSize);

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

char ch = input.charAt(i);

theStack.push(ch);

}

output = "";

while (!theStack.isEmpty()) {

char ch = theStack.pop();

output = output + ch;

}

return output;

}

public static void main(String[] args) throws IOException {

String input = "Java Source and Support";

String output;

StringReverserThroughStack theReverser =

new StringReverserThroughStack(input);

output = theReverser.doRev();

System.out.println("Reversed: " + output);

}

class Stack {

private int maxSize;

private char[] stackArray;

private int top;

public Stack(int max) {

maxSize = max;

stackArray = new char[maxSize];

top = -1;

}

public void push(char j) {

stackArray[++top] = j;

}

public char pop() {

return stackArray[top--];

}

public char peek() {

return stackArray[top];

}

public boolean isEmpty() {

return (top == -1);

}

}

}