digvijaybhakuni/Last4DigitMasking.java

## Last4DigitMasking.java
	private String getLast4DigitMasking1(String str) {
		final char[] chars = str.toCharArray();
		for(int i = 0; i < chars.length - 4; i++){
			chars[i] = '*';
		}
		return String.valueOf(chars);
	}
	private String getLast4DigitMasking1(String str) {
	final char[] chars = str.toCharArray();
	for(int i = 0; i < chars.length - 4; i++){
	chars[i] = '*';
	}
	return String.valueOf(chars);
	}