1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 /* 18 * Copyright (C) 2016 The Android Open Source Project 19 * 20 * Licensed under the Apache License, Version 2.0 (the "License"); 21 * you may not use this file except in compliance with the License. 22 * You may obtain a copy of the License at 23 * 24 * http://www.apache.org/licenses/LICENSE-2.0 25 * 26 * Unless required by applicable law or agreed to in writing, software 27 * distributed under the License is distributed on an "AS IS" BASIS, 28 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 29 * See the License for the specific language governing permissions and 30 * limitations under the License. 31 */ 32 33 package java.lang; 34 35 import java.util.Properties; 36 37 /** 38 * A class encoding all hardcoded system property values on Android. A compiler may 39 * take advantage of these properties. Changing them at load-time (-D) or runtime 40 * may not have any effect. 41 * 42 * @hide 43 */ 44 public final class AndroidHardcodedSystemProperties { 45 46 // This value is shared with sun.misc.Version. It is defined here so that the compiler 47 // can use it. 48 public final static String JAVA_VERSION = "0"; 49 50 final static String[][] STATIC_PROPERTIES = { 51 // None of these four are meaningful on Android, but these keys are guaranteed 52 // to be present for System.getProperty. For java.class.version, we use the maximum 53 // class file version that dx currently supports. 54 { "java.class.version", "50.0" }, 55 { "java.version", JAVA_VERSION }, 56 { "java.compiler", "" }, 57 { "java.ext.dirs", "" }, 58 59 { "java.specification.name", "Dalvik Core Library" }, 60 { "java.specification.vendor", "The Android Project" }, 61 { "java.specification.version", "0.9" }, 62 63 { "java.vendor", "The Android Project" }, 64 { "java.vendor.url", "http://www.android.com/" }, 65 { "java.vm.name", "Dalvik" }, 66 { "java.vm.specification.name", "Dalvik Virtual Machine Specification" }, 67 { "java.vm.specification.vendor", "The Android Project" }, 68 { "java.vm.specification.version", "0.9" }, 69 { "java.vm.vendor", "The Android Project" }, 70 71 { "java.vm.vendor.url", "http://www.android.com/" }, 72 73 { "java.net.preferIPv6Addresses", "false" }, 74 75 { "file.encoding", "UTF-8" }, 76 77 { "file.separator", "/" }, 78 { "line.separator", "\n" }, 79 { "path.separator", ":" }, 80 81 // Turn off ICU debugging. This allows compile-time initialization of a range of 82 // classes. b/28039175 83 { "ICUDebug", null }, 84 85 // Hardcode DecimalFormat parsing flag to be default. b/27265238 86 { "android.icu.text.DecimalFormat.SkipExtendedSeparatorParsing", null }, 87 // Hardcode MessagePattern apostrophe mode to be default. b/27265238 88 { "android.icu.text.MessagePattern.ApostropheMode", null }, 89 90 // Hardcode "sun.io.useCanonCaches" to use the default (on). b/28174137 91 { "sun.io.useCanonCaches", null }, 92 { "sun.io.useCanonPrefixCache", null }, 93 94 // Hardcode some http properties to use the default. b/28174137 95 { "http.keepAlive", null }, 96 { "http.keepAliveDuration", null }, 97 { "http.maxConnections", null }, 98 99 // Hardcode "os.name" to "Linux." Aids compile-time initialization, checked in System. 100 // b/28174137 101 { "os.name", "Linux" }, 102 103 // Turn off javax.net debugging. This allows compile-time initialization of a range 104 // of classes. b/28174137 105 { "javax.net.debug", null }, 106 107 // Hardcode default value for AVA. b/28174137 108 { "com.sun.security.preserveOldDCEncoding", null }, 109 }; 110 } 111 112