commons-lang-1.0.1.jar - Apache Commons Lang
commons-lang-1.0.1.jar is the JAR file for Apache Commons Lang 1.0.1, which
provides a host of helper utilities for the java.lang API.
JAR File Size and Download Location:
File name: commons-lang-1.0.1.jar File size: 63980 bytes Date modified: 11/22/2002 Download: Apache Commons Lang Website
✍: FYIcenter.com
⏎ org/apache/commons/lang/SystemUtils.java
package org.apache.commons.lang;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/**
* Common <code>System</code> class helpers.
*
* @author Based on code from Avalon Excalibur
* @author Based on code from Lucene
* @author <a href="mailto:scolebourne@apache.org">Stephen Colebourne</a>
* @author <a href="mailto:sdowney@panix.com">Steve Downey</a>
* @version $Id: SystemUtils.java,v 1.2.2.1 2002/11/22 23:31:13 bayard Exp $
*/
public class SystemUtils {
/**
* SystemUtils instances should NOT be constructed in standard programming.
* Instead, the class should be used as <code>SystemUtils.FILE_SEPARATOR</code>.
* This constructor is public to permit tools that require a JavaBean instance
* to operate.
*/
public SystemUtils() {
}
/**
* System Property: file.separator
* File separator ("/" on UNIX).
* First in version: 1.1
*/
public static final String FILE_SEPARATOR = System.getProperty("file.separator");
/**
* System Property: java.class.path
* Java class path.
* First in version: 1.1
*/
public static final String JAVA_CLASS_PATH = System.getProperty("java.class.path");
/**
* System Property: java.class.version
* Java class format version number.
* First in version: 1.1
*/
public static final String JAVA_CLASS_VERSION = System.getProperty("java.class.version");
/**
* System Property: java.compiler
* Name of JIT compiler to use.
* First in version: 1.4
*/
public static final String JAVA_COMPILER = System.getProperty("java.compiler");
/**
* System Property: java.ext.dirs
* Path of extension directory or directories.
* First in version: 1.3
*/
public static final String JAVA_EXT_DIRS = System.getProperty("java.ext.dirs");
/**
* System Property: java.home
* Java installation directory.
* First in version: 1.1
*/
public static final String JAVA_HOME = System.getProperty("java.home");
/**
* System Property: java.io.tmpdir
* Default temp file path.
* First in version: 1.4
*/
public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");
/**
* System Property: java.library.path
* List of paths to search when loading libraries.
* First in version: 1.4
*/
public static final String JAVA_LIBRARY_PATH = System.getProperty("java.library.path");
/**
* System Property: java.specification.name
* Java Runtime Environment specification name.
* First in version: 1.2
*/
public static final String JAVA_SPECIFICATION_NAME = System.getProperty("java.specification.name");
/**
* System Property: java.specification.vendor
* Java Runtime Environment specification vendor.
* First in version: 1.2
*/
public static final String JAVA_SPECIFICATION_VENDOR = System.getProperty("java.specification.vendor");
/**
* System Property: java.specification.version
* Java Runtime Environment specification version.
* First in version: 1.2
*/
public static final String JAVA_SPECIFICATION_VERSION = System.getProperty("java.specification.version");
/**
* System Property: java.vendor
* Java vendor-specific string.
* First in version: 1.1
*/
public static final String JAVA_VENDOR = System.getProperty("java.vendor");
/**
* System Property: java.vendor.url
* Java vendor URL.
* First in version: 1.1
*/
public static final String JAVA_VENDOR_URL = System.getProperty("java.vendor.url");
/**
* System Property: java.version
* Java version number.
* First in version: 1.1
*/
public static final String JAVA_VERSION = System.getProperty("java.version");
/**
* System Property: java.vm.name
* Java Virtual Machine implementation name.
* First in version: 1.2
*/
public static final String JAVA_VM_NAME = System.getProperty("java.vm.name");
/**
* System Property: java.vm.specification.name
* Java Virtual Machine specification name.
* First in version: 1.2
*/
public static final String JAVA_VM_SPECIFICATION_NAME = System.getProperty("java.vm.specification.name");
/**
* System Property: java.vm.specification.vendor
* Java Virtual Machine specification vendor.
* First in version: 1.2
*/
public static final String JAVA_VM_SPECIFICATION_VENDOR = System.getProperty("java.vm.specification.vendor");
/**
* System Property: java.vm.specification.version
* Java Virtual Machine specification version.
* First in version: 1.2
*/
public static final String JAVA_VM_SPECIFICATION_VERSION = System.getProperty("java.vm.specification.version");
/**
* System Property: java.vm.vendor
* Java Virtual Machine implementation vendor.
* First in version: 1.2
*/
public static final String JAVA_VM_VENDOR = System.getProperty("java.vm.vendor");
/**
* System Property: java.vm.version
* Java Virtual Machine implementation version.
* First in version: 1.2
*/
public static final String JAVA_VM_VERSION = System.getProperty("java.vm.version");
/**
* System Property: line.separator
* Line separator ("\n" on UNIX).
* First in version: 1.1
*/
public static final String LINE_SEPARATOR = System.getProperty("line.separator");
/**
* System Property: os.arch
* Operating system architecture.
* First in version: 1.1
*/
public static final String OS_ARCH = System.getProperty("os.arch");
/**
* System Property: os.name
* Operating system name.
* First in version: 1.1
*/
public static final String OS_NAME = System.getProperty("os.name");
/**
* System Property: os.version
* Operating system version.
* First in version: 1.1
*/
public static final String OS_VERSION = System.getProperty("os.version");
/**
* System Property: path.separator
* Path separator (":" on UNIX).
* First in version: 1.1
*/
public static final String PATH_SEPARATOR = System.getProperty("path.separator");
/**
* System Property: user.dir
* User's current working directory.
* First in version: 1.1
*/
public static final String USER_DIR = System.getProperty("user.dir");
/**
* System Property: user.home
* User's home directory.
* First in version: 1.1
*/
public static final String USER_HOME = System.getProperty("user.home");
/**
* System Property: user.name
* User's account name.
* First in version: 1.1
*/
public static final String USER_NAME = System.getProperty("user.name");
/** True iff this is Java version 1.1. */
public static final boolean IS_JAVA_1_1 = JAVA_VERSION.startsWith("1.1.");
/** True iff this is Java version 1.2. */
public static final boolean IS_JAVA_1_2 = JAVA_VERSION.startsWith("1.2.");
/** True iff this is Java version 1.3. */
public static final boolean IS_JAVA_1_3 = JAVA_VERSION.startsWith("1.3.");
/** True iff this is Java version 1.4. */
public static final boolean IS_JAVA_1_4 = JAVA_VERSION.startsWith("1.4.");
/** True iff this is Java version 1.3. */
public static final boolean IS_JAVA_1_5 = JAVA_VERSION.startsWith("1.5.");
// Parsing operating system may stay here, or it may be moved somewhere else entirely
// /** True iff this is running on Windows */
// public static final boolean IS_WINDOWS;
// /** True iff this is running on Unix */
// public static final boolean IS_UNIX;
// /** True iff this is running on Mac */
// public static final boolean IS_MAC;
// /** True iff this is running on OS2 */
// public static final boolean IS_OS2;
// /** True iff this is running on Linux */
// public static final boolean IS_LINUX;
//
// /*
// * The JLS doesn't seem to specify an exact naming convention for the
// * os.name. We ensure a uniform naming here.
// */
// static {
// // from http://www.geocities.com/vamp201/os.html
// if (OS_NAME.startsWith("Windows")) {
// IS_WINDOWS = true;
// IS_UNIX = false;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("SunOS")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Solaris")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Linux")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = true;
// } else if (OS_NAME.startsWith("HP-UX")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("AIX")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Irix")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Digital Unix")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("OS/400")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("OS/2")) {
// IS_WINDOWS = false;
// IS_UNIX = false;
// IS_MAC = false;
// IS_OS2 = true;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Mac OS X")) {
// IS_WINDOWS = false;
// IS_UNIX = true;
// IS_MAC = true;
// IS_OS2 = false;
// IS_LINUX = false;
// } else if (OS_NAME.startsWith("Mac")) {
// IS_WINDOWS = false;
// IS_UNIX = false;
// IS_MAC = true;
// IS_OS2 = false;
// IS_LINUX = false;
// } else {
// IS_WINDOWS = false;
// IS_UNIX = false;
// IS_MAC = false;
// IS_OS2 = false;
// IS_LINUX = false;
// }
// }
/**
* Get the Java version number as a float.
* Example output:<br>
* 1.2f for JDK 1.2<br>
* 1.31f for JDK 1.3.1<br>
*
* @return the version, for example 1.31f for JDK 1.3.1
*/
public static float getJavaVersion() {
String str = JAVA_VERSION.substring(0, 3);
if (JAVA_VERSION.length() >= 5) {
str = str + JAVA_VERSION.substring(4, 5);
}
return Float.parseFloat(str);
}
/**
* Is the Java version at the the requested version.
* Example input:<br>
* 1.2f for JDK 1.2<br>
* 1.31f for JDK 1.3.1<br>
*
* @param requiredVersion the required version, for example 1.31f
* @return true if the actual version is equal or greater than the required version
*/
public static boolean isJavaVersionAtLeast(float requiredVersion) {
return (getJavaVersion() >= requiredVersion);
}
}
⏎ org/apache/commons/lang/SystemUtils.java
⇒ Using commons-lang3.jar in Java Programs
⇐ commons-lang-2.6.jar - Apache Commons Lang
2017-04-15, 20818👍, 0💬
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