JAVA应用程序获取当前路径

原文地址：http://blog.csdn.net/ailinty/article/details/7076770

如果对于类不在包内：利用System.getProperty("user.dir")和this.getClass().getResource("")获取的路径是一样的，

但是对于类在包内的情况就不同了:System.getProperty("user.dir")取得的是包所在的路径，而this.getClass().getResource("")才真正获得的是当前类所在的路径。

例如: 在ddhxd.test.Test1类中:

    System.getProperty("user.dir")                  返回D:/Java/testcode

    Test1.class.getResource("")                     返回file:/D:/Java/testcode/ddhxd/test/

    **Test1.class 即 Class.forName("ddhxd.test.Test1")

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System.getProperty("java.version")                  1.6.0_10                                                        // Java 运行时环境供应商 

System.getProperty("java.vendor")                   Sun Microsystems Inc.                                           //  Java 运行时环境供应商

System.getProperty("java.vendor.url")               http://java.sun.com/                                            // Java 供应商的 URL 

System.getProperty("java.home")                     D:/Java/jdk1.6.0_10/jre                                         // Java 安装目录 

System.getProperty("java.vm.specification.version") 1.0                                                             // Java 虚拟机规范版本 

System.getProperty("java.vm.specification.vendor")  Sun Microsystems Inc.                                           //  Java 虚拟机规范供应商 

System.getProperty("java.vm.specification.name")    Java Virtual Machine Specification                              //  Java 虚拟机规范名称 

System.getProperty("java.vm.version")               11.0-b15                                                        //  Java 虚拟机实现版本 

System.getProperty("java.vm.vendor")                Sun Microsystems Inc.                                           //  Java 虚拟机实现供应商 

System.getProperty("java.vm.name")                  Java HotSpot(TM) Client VM                                      //  Java 虚拟机实现名称 

System.getProperty("java.specification.version")    1.6                                                             //  Java 运行时环境规范版本 

System.getProperty("java.specification.vendor")     Sun Microsystems Inc.                                           //  Java 运行时环境规范供应商 

System.getProperty("java.specification.name")       Java Platform API Specification                                 //  Java 运行时环境规范名称 

System.getProperty("java.class.version")            50.0                                                            //  Java 类格式版本号 

System.getProperty("java.class.path")               .;D:/Java/apache-tomcat-6.0.18/lib/servlet-api.jar;.........    //  Java 类路径 

System.getProperty("java.library.path")             D:/Java/jdk1.6.0_10/bin;.;C:/WINDOWS/Sun/...................    //  加载库时搜索的路径列表 

System.getProperty("java.io.tmpdir")                C:/DOCUME~1/HUANG~1.XIA/LOCALS~1/Temp/                          //  默认的临时文件路径 

System.getProperty("java.compiler")                 null                                                            //  要使用的 JIT 编译器的名称 

System.getProperty("java.ext.dirs")                 D:/Java/jdk1.6.0_10/jre/lib/ext;C:/WINDOWS/Sun/Java/lib/ext     //  一个或多个扩展目录的路径 

System.getProperty("os.name")                       Windows XP                                                      //  操作系统的名称 

System.getProperty("os.arch")                       x86                                                             //  操作系统的架构 

System.getProperty("os.version")                    5.1                                                             //  操作系统的版本 

System.getProperty("file.separator")                /                                                               //  文件分隔符（在 UNIX 系统中是“/”） 

System.getProperty("path.separator")                ;                                                               //  路径分隔符（在 UNIX 系统中是“:”） 

System.getProperty("line.separator")                                                                                //  行分隔符（在 UNIX 系统中是“/n”） 

System.getProperty("user.name")                     Huang.XiaoDong                                                  //  用户的账户名称 

System.getProperty("user.home")                     C:/Documents and Settings/huang.xiaodong                        //  用户的主目录 

System.getProperty("user.dir")                      D:/Java/testcode                                                //  用户的当前工作目录