113 lines
3.1 KiB
Java
113 lines
3.1 KiB
Java
/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.utils.helper;
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/**
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* A helper class for {@link System} methods
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*
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class SystemHelper {
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private static final SystemHelper instance;
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static {
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instance = new SystemHelper();
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}
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public static SystemHelper getInstance() {
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return SystemHelper.instance;
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}
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public static final String osName = System.getProperty("os.name");
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public static final String osArch = System.getProperty("os.arch");
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public static final String osVersion = System.getProperty("os.version");
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public static final String javaVendor = System.getProperty("java.vendor");
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public static final String javaVersion = System.getProperty("java.version");
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private static final int nrOfCores = Runtime.getRuntime().availableProcessors();
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/**
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* private constructor
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*/
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private SystemHelper() {
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//
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}
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/**
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* @see java.lang.Object#toString()
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*/
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@Override
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public String toString() {
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return SystemHelper.asString();
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}
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/**
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* @see java.lang.Object#toString()
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*/
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public static String asString() {
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return "OS: " + osName + " " + osVersion + " Arch: " + osArch + " on Java " + javaVendor + " " + javaVersion
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+ " CPU Cores: " + nrOfCores;
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}
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public static String getUserDir() {
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return System.getProperty("user.dir");
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}
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public static boolean isMacOS() {
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return SystemHelper.osName.startsWith("Mac");
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}
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public static boolean isWindows() {
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return SystemHelper.osName.startsWith("Win");
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}
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public static boolean isLinux() {
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return SystemHelper.osName.startsWith("Lin");
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}
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public static boolean is32bit() {
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return !SystemHelper.is64bit();
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}
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public static boolean is64bit() {
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return System.getProperty("sun.arch.data.model").equals("64");
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}
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public static String getMaxMemory() {
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return FileHelper.humanizeFileSize(Runtime.getRuntime().maxMemory());
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}
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public static String getTotalMemory() {
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return FileHelper.humanizeFileSize(Runtime.getRuntime().totalMemory());
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}
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public static String getUsedMemory() {
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return FileHelper.humanizeFileSize(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory());
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}
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public static String getFreeMemory() {
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return FileHelper.humanizeFileSize(Runtime.getRuntime().freeMemory());
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}
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public static String getMemorySummary() {
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return "System Memory available "
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+ SystemHelper.getMaxMemory() + ", Total: "
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+ SystemHelper.getTotalMemory() + ", Used: "
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+ SystemHelper.getUsedMemory() + ", Free: "
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+ SystemHelper.getFreeMemory();
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}
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}
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