1
14
15 package com.liferay.portal.kernel.util;
16
17 import com.liferay.portal.kernel.log.Log;
18 import com.liferay.portal.kernel.log.LogFactoryUtil;
19 import com.liferay.portal.kernel.log.LogUtil;
20
21
26 public class JavaProps {
27
28 public static final double JAVA_CLASS_VERSION_JDK_4 = 48.0;
29
30 public static final double JAVA_CLASS_VERSION_JDK_5 = 49.0;
31
32 public static final double JAVA_CLASS_VERSION_JDK_6 = 50.0;
33
34 public static final double JAVA_CLASS_VERSION_JDK_7 = 51.0;
35
36 public static String getJavaClassPath() {
37 return _instance._javaClassPath;
38 }
39
40 public static double getJavaClassVersion() {
41 return _instance._javaClassVersion;
42 }
43
44 public static String getJavaRuntimeVersion() {
45 return _instance._javaRuntimeVersion;
46 }
47
48 public static double getJavaSpecificationVersion() {
49 return _instance._javaSpecificationVersion;
50 }
51
52 public static String getJavaVendor() {
53 return _instance._javaVendor;
54 }
55
56 public static String getJavaVersion() {
57 return _instance._javaVersion;
58 }
59
60 public static String getJavaVmVersion() {
61 return _instance._javaVmVersion;
62 }
63
64 public static boolean is64bit() {
65 return _instance._64bit;
66 }
67
68 public static boolean isIBM() {
69 return _instance._ibm;
70 }
71
72 public static boolean isJDK4() {
73 if (JavaProps.getJavaClassVersion() >=
74 JavaProps.JAVA_CLASS_VERSION_JDK_4) {
75
76 return true;
77 }
78 else {
79 return false;
80 }
81 }
82
83 public static boolean isJDK5() {
84 if (JavaProps.getJavaClassVersion() >=
85 JavaProps.JAVA_CLASS_VERSION_JDK_5) {
86
87 return true;
88 }
89 else {
90 return false;
91 }
92 }
93
94 public static boolean isJDK6() {
95 if (JavaProps.getJavaClassVersion() >=
96 JavaProps.JAVA_CLASS_VERSION_JDK_6) {
97
98 return true;
99 }
100 else {
101 return false;
102 }
103 }
104
105 public static boolean isJDK7() {
106 if (JavaProps.getJavaClassVersion() >=
107 JavaProps.JAVA_CLASS_VERSION_JDK_7) {
108
109 return true;
110 }
111 else {
112 return false;
113 }
114 }
115
116 private JavaProps() {
117 _javaClassPath = System.getProperty("java.class.path");
118 _javaClassVersion = Double.parseDouble(System.getProperty(
119 "java.class.version"));
120 _javaRuntimeVersion = System.getProperty("java.runtime.version");
121 _javaSpecificationVersion = Double.parseDouble(System.getProperty(
122 "java.specification.version"));
123 _javaVendor = System.getProperty("java.vendor");
124 _javaVersion = System.getProperty("java.version");
125 _javaVmVersion = System.getProperty("java.vm.version");
126
127 _64bit = Validator.equals(
128 "64", System.getProperty("sun.arch.data.model"));
129
130 if (_javaVendor != null) {
131 _ibm = _javaVendor.startsWith("IBM");
132 }
133
134 LogUtil.debug(_log, System.getProperties());
135 }
136
137 private static Log _log = LogFactoryUtil.getLog(JavaProps.class);
138
139 private static JavaProps _instance = new JavaProps();
140
141 private boolean _64bit;
142 private boolean _ibm;
143 private String _javaClassPath;
144 private double _javaClassVersion;
145 private String _javaRuntimeVersion;
146 private double _javaSpecificationVersion;
147 private String _javaVendor;
148 private String _javaVersion;
149 private String _javaVmVersion;
150
151 }