求java代码 用位操作怎么做

一个short型值用十六位比特存储。编写程序，提示用户，输入一个短整形，然后显示这个整数的16比特形式运行示例
Enter an integer :5
the bits is 0000000000000101

 /* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
    public static void show(int n, int acc)
    {
        if (n < 0) n = 65536 + n;
        if (acc == 0) return;
        show(n >> 1, acc - 1);
        System.out.print(n % 2);
    }
    public static void main (String[] args) throws java.lang.Exception
    {
        System.out.print("5 the bits is ");
        show(5, 16);
        System.out.println();
        System.out.print("-5 the bits is ");
        show(-5, 16);
        System.out.println();
    }
}

String s = Integer.toHexString(5);
while (s.length < 16)
s = "0" + s;

5 the bits is 0000000000000101
-5 the bits is 1111111111111011

http://ideone.com/BitKJx