Java JVM is 64 Bit is64Bit()

Description

is Bit

License

Apache License

Return

null if cannot be determined

Declaration

public static Boolean is64Bit() 

Method Source Code

//package com.java2s;
/*/*from w  w w .  j  a v  a 2s.  com*/
 *    Copyright 2016 Roche NimbleGen Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

public class Main {
    /**
     * @return null if cannot be determined
     */
    public static Boolean is64Bit() {
        Boolean is64bit = null;

        if (isWindows()) {
            is64bit = (System.getenv("ProgramFiles(x86)") != null);
        } else {
            is64bit = (System.getProperty("os.arch").indexOf("64") != -1);
        }

        return is64bit;
    }

    public static boolean isWindows() {
        return getOsName().startsWith("Windows");
    }

    public static String getOsName() {
        return System.getProperty("os.name");
    }
}

Related

1. is64Bit()
2. is64Bit()
3. is64Bit()
4. is64Bit()
5. is64Bit()
6. is64Bit()