How to Remove a content of second String from First String

How to Remove a content of second String from First String.

SOURCE : RemoveFromSecond.java

public class RemoveFromSecond {

	public static void main(String[] args) {
		String first = "arpit";
		String second = "tp";
		boolean bit[] = new boolean[256]; // boolean are defaulted to false

		for (int i = 0; i < second.length(); i++) {
			bit[second.charAt(i)] = true;
		}

		char[] result = new char[first.length() - second.length()];

		for (int i = 0, j = 0; i < first.length(); i++) {
			if (bit[first.charAt(i)] == false) {
				result[j] = first.charAt(i);
				j++;
			}

		}

		String resultstr = new String(result);
		System.out.println("Result : " + resultstr.toString());
	}

}

INPUT

String first = "arpit";
String second = "tp";

OUTPUT

Result : ari

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