how to convert intager to binary in java code example

Example 1: java integer to binary string

int n = 1000;
String s = Integer.toBinaryString(n);

Example 2: java int to binary string

public static String makeBinaryString(int n) {
	StringBuilder sb = new StringBuilder();
	while (n > 0) {
    sb.append(n % 2);
		n /= 2;
	}
  	sb.reverse();  	
  	return sb.toString();
}