convertion of DECIMAL NUMBER TO BINARY NUMBER

package javaProg;

public class decimal_to_binary {
public static void toBinary(int decimal) {
int[] binary = new int[40];
int index = 0;
while (decimal > 0) {
binary[index++] = decimal % 2;
decimal = decimal / 2;
}
for (int i = index - 1; i >= 0; i--) {
System.out.print(binary[i]);
}
System.out.println();
}

    public static void main(String[] args) {
        int decimal = 10;
        System.out.print("Binary representation of " + decimal + " is: ");
        toBinary(decimal);
    }
}