01: /*
02: * @(#)Version.java 1.14 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27:
28: package sun.misc;
29:
30: import java.io.PrintStream;
31:
32: public class Version {
33: /*
34: static {
35: init();
36: }
37: */
38:
39: public static void init() {
40: /*
41: * java.version is already set in
42: * Java_java_lang_System_initProperties()
43: *
44: * System.setProperty("java.version", java_version);
45: *
46: * In CVM, "java.runtime.*" properties are not defined since
47: * they are not officially required.
48: *
49: * System.setProperty("java.runtime.version", java_runtime_version);
50: * System.setProperty("java.runtime.name", java_runtime_name);
51: */
52: }
53:
54: /**
55: * In case you were wondering this method is called by java -version.
56: * Sad that it prints to stderr; would be nicer if default printed on
57: * stdout.
58: */
59: public static void print(boolean longVersion) {
60: print(System.err, longVersion);
61: }
62:
63: /**
64: * Give a stream, it will print version info on it.
65: */
66: public static void print(PrintStream ps, boolean longVersion) {
67: String productName = System.getProperty("sun.misc.product")
68: + " (" + System.getProperty("java.version") + ")";
69: if (!longVersion) {
70: ps.println(productName);
71: } else {
72: /* First line: Product. */
73: ps.println("Product: " + productName);
74:
75: /* Second line: J2ME Profile. */
76: ps.println("Profile: "
77: + System.getProperty("java.specification.name")
78: + " "
79: + System.getProperty("java.specification.version"));
80:
81: /* Third line: JVM information. */
82: String java_vm_name = (String) System
83: .getProperty("java.vm.name");
84: String java_vm_version = System
85: .getProperty("java.vm.version");
86: String java_vm_info = System.getProperty("java.vm.info");
87: ps.println("JVM: " + java_vm_name + " "
88: + java_vm_version + " (" + java_vm_info + ")");
89: }
90: }
91: }
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