Get the maximum value for the number of unsigned bits. - Java Language Basics

Java examples for Language Basics:Bit

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Description

Get the maximum value for the number of unsigned bits.

Demo Code

/* This software was developed by employees of the National Institute of
 * Standards and Technology (NIST), an agency of the Federal Government.
 * Pursuant to title 15 United States Code Section 105, works of NIST
 * employees are not subject to copyright protection in the United States
 * and are considered to be in the public domain.  As a result, a formal
 * license is not needed to use the software.
 * /*from ww w  .jav a 2s  .  c o m*/
 * This software is provided by NIST as a service and is expressly
 * provided "AS IS".  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
 * AND DATA ACCURACY.  NIST does not warrant or make any representations
 * regarding the use of the software or the results thereof including, but
 * not limited to, the correctness, accuracy, reliability or usefulness of
 * the software.
 * 
 * Permission to use this software is contingent upon your acceptance
 * of the terms of this agreement.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int i = 2;
        System.out.println(getMaxIntValueForNumBits(i));
    }

    /** Maximum cache value available. */
    private static long maxValueCache[] = new long[64];

    /**
     * Get the maximum value for the number of unsigned bits.
     * 
     * @param i
     *            The number of unsigned bits.
     * @return The maximum value for the number of unsigned bits.
     */
    public static int getMaxIntValueForNumBits(int i) {

        if (i >= 32)
            throw new RuntimeException("Number of bits exceeds Java int.");
        else
            return (int) maxValueCache[i];

    }
}

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