/*
* Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.misc;
import java.io.PrintStream;
public class Version {
private static final String launcher_name =
"@@launcher_name@@";
private static final String java_version =
"@@java_version@@";
private static final String java_runtime_name =
"@@java_runtime_name@@";
private static final String java_runtime_version =
"@@java_runtime_version@@";
static {
init();
}
public static void init() {
System.setProperty("java.version", java_version);
System.setProperty("java.runtime.version", java_runtime_version);
System.setProperty("java.runtime.name", java_runtime_name);
}
private static boolean versionsInitialized = false;
private static int jvm_major_version = 0;
private static int jvm_minor_version = 0;
private static int jvm_micro_version = 0;
private static int jvm_update_version = 0;
private static int jvm_build_number = 0;
private static String jvm_special_version = null;
private static int jdk_major_version = 0;
private static int jdk_minor_version = 0;
private static int jdk_micro_version = 0;
private static int jdk_update_version = 0;
private static int jdk_build_number = 0;
private static String jdk_special_version = null;
/**
* In case you were wondering this method is called by java -version.
* Sad that it prints to stderr; would be nicer if default printed on
* stdout.
*/
public static void print() {
print(System.err);
}
/**
* Give a stream, it will print version info on it.
*/
public static void print(PrintStream ps) {
/* First line: platform version. */
ps.println(launcher_name + " version \"" + java_version + "\"");
/* Second line: runtime version (ie, libraries). */
ps.println(java_runtime_name + " (build " +
java_runtime_version + ")");
/* Third line: JVM information. */
String java_vm_name = System.getProperty("java.vm.name");
String java_vm_version = System.getProperty("java.vm.version");
String java_vm_info = System.getProperty("java.vm.info");
ps.println(java_vm_name + " (build " + java_vm_version + ", " +
java_vm_info + ")");
}
/**
* Returns the major version of the running JVM if it's 1.6 or newer
* or any RE VM build. It will return 0 if it's an internal 1.5 or
* 1.4.x build.
*
* @since 1.6
*/
public static synchronized int jvmMajorVersion() {
if (!versionsInitialized) {
initVersions();
}
return jvm_major_version;
}
/**
* Returns the minor version of the running JVM if it's 1.6 or newer
* or any RE VM build. It will return 0 if it's an internal 1.5 or
* 1.4.x build.
* @since 1.6
*/
public static synchronized int jvmMinorVersion() {
if (!versionsInitialized) {
initVersions();
}
return jvm_minor_version;
}
/**
* Returns the micro version of the running JVM if it's 1.6 or newer
* or any RE VM build. It will return 0 if it's an internal 1.5 or
* 1.4.x build.
* @since 1.6
*/
public static synchronized int jvmMicroVersion() {
if (!versionsInitialized) {
initVersions();
}
return jvm_micro_version;
}
/**
* Returns the update release version of the running JVM if it's
* a RE build. It will return 0 if it's an internal build.
* @since 1.6
*/
public static synchronized int jvmUpdateVersion() {
if (!versionsInitialized) {
initVersions();
}
return jvm_update_version;
}
public static synchronized String jvmSpecialVersion() {
if (!versionsInitialized) {
initVersions();
}
if (jvm_special_version == null) {
jvm_special_version = getJvmSpecialVersion();
}
return jvm_special_version;
}
public static native String getJvmSpecialVersion();
/**
* Returns the build number of the running JVM if it's a RE build
* It will return 0 if it's an internal build.
* @since 1.6
*/
public static synchronized int jvmBuildNumber() {
if (!versionsInitialized) {
initVersions();
}
return jvm_build_number;
}
/**
* Returns the major version of the running JDK.
*
* @since 1.6
*/
public static synchronized int jdkMajorVersion() {
if (!versionsInitialized) {
initVersions();
}
return jdk_major_version;
}
/**
* Returns the minor version of the running JDK.
* @since 1.6
*/
public static synchronized int jdkMinorVersion() {
if (!versionsInitialized) {
initVersions();
}
return jdk_minor_version;
}
/**
* Returns the micro version of the running JDK.
* @since 1.6
*/
public static synchronized int jdkMicroVersion() {
if (!versionsInitialized) {
initVersions();
}
return jdk_micro_version;
}
/**
* Returns the update release version of the running JDK if it's
* a RE build. It will return 0 if it's an internal build.
* @since 1.6
*/
public static synchronized int jdkUpdateVersion() {
if (!versionsInitialized) {
initVersions();
}
return jdk_update_version;
}
public static synchronized String jdkSpecialVersion() {
if (!versionsInitialized) {
initVersions();
}
if (jdk_special_version == null) {
jdk_special_version = getJdkSpecialVersion();
}
return jdk_special_version;
}
public static native String getJdkSpecialVersion();
/**
* Returns the build number of the running JDK if it's a RE build
* It will return 0 if it's an internal build.
* @since 1.6
*/
public static synchronized int jdkBuildNumber() {
if (!versionsInitialized) {
initVersions();
}
return jdk_build_number;
}
// true if JVM exports the version info including the capabilities
private static boolean jvmVersionInfoAvailable;
private static synchronized void initVersions() {
if (versionsInitialized) {
return;
}
jvmVersionInfoAvailable = getJvmVersionInfo();
if (!jvmVersionInfoAvailable) {
// parse java.vm.version for older JVM before the
// new JVM_GetVersionInfo is added.
// valid format of the version string is:
// n.n.n[_uu[c]][-<identifer>]-bxx
CharSequence cs = System.getProperty("java.vm.version");
if (cs.length() >= 5 &&
Character.isDigit(cs.charAt(0)) && cs.charAt(1) == '.' &&
Character.isDigit(cs.charAt(2)) && cs.charAt(3) == '.' &&
Character.isDigit(cs.charAt(4))) {
jvm_major_version = Character.digit(cs.charAt(0), 10);
jvm_minor_version = Character.digit(cs.charAt(2), 10);
jvm_micro_version = Character.digit(cs.charAt(4), 10);
cs = cs.subSequence(5, cs.length());
if (cs.charAt(0) == '_' && cs.length() >= 3 &&
Character.isDigit(cs.charAt(1)) &&
Character.isDigit(cs.charAt(2))) {
int nextChar = 3;
try {
String uu = cs.subSequence(1, 3).toString();
jvm_update_version = Integer.valueOf(uu).intValue();
if (cs.length() >= 4) {
char c = cs.charAt(3);
if (c >= 'a' && c <= 'z') {
jvm_special_version = Character.toString(c);
nextChar++;
}
}
} catch (NumberFormatException e) {
// not conforming to the naming convention
return;
}
cs = cs.subSequence(nextChar, cs.length());
}
if (cs.charAt(0) == '-') {
// skip the first character
// valid format: <identifier>-bxx or bxx
// non-product VM will have -debug|-release appended
cs = cs.subSequence(1, cs.length());
String[] res = cs.toString().split("-");
for (String s : res) {
if (s.charAt(0) == 'b' && s.length() == 3 &&
Character.isDigit(s.charAt(1)) &&
Character.isDigit(s.charAt(2))) {
jvm_build_number =
Integer.valueOf(s.substring(1, 3)).intValue();
break;
}
}
}
}
}
getJdkVersionInfo();
versionsInitialized = true;
}
// Gets the JVM version info if available and sets the jvm_*_version fields
// and its capabilities.
//
// Return false if not available which implies an old VM (Tiger or before).
private static native boolean getJvmVersionInfo();
private static native void getJdkVersionInfo();
}
// Help Emacs a little because this file doesn't end in .java.
//
// Local Variables: ***
// mode: java ***
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