show java version when start

2021-10-02 14:40:03 +08:00
parent f4e076d82c
commit aed80b59fd
2 changed files with 87 additions and 0 deletions
--- a/maxkey-common/src/test/java/org/maxkey/word/RunJavaEnvs.java
+++ b/maxkey-common/src/test/java/org/maxkey/word/RunJavaEnvs.java
@@ -0,0 +1,71 @@
+package org.maxkey.word;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.commons.lang.SystemUtils;
+import org.apache.commons.lang3.ArchUtils;
+
+public class RunJavaEnvs {
+
+    public static void main(String[] args) {
+        Map<String, String> map = System.getenv();
+        for(Iterator<String> itr = map.keySet().iterator();itr.hasNext();){
+            String key = itr.next();
+            System.out.println(key + "=" + map.get(key));
+        } 
+        
+        System.out.println(SystemUtils.JAVA_VENDOR);
+        System.out.println(SystemUtils.JAVA_COMPILER);
+        System.out.println(SystemUtils.JAVA_VERSION);
+        System.out.println(SystemUtils.JAVA_HOME);
+        
+        System.out.println("JAVA_CLASS_VERSION :"+SystemUtils.JAVA_CLASS_VERSION);
+        
+        System.out.println(SystemUtils.JAVA_SPECIFICATION_VERSION);
+        System.out.println(SystemUtils.JAVA_SPECIFICATION_NAME);
+        System.out.println(SystemUtils.JAVA_SPECIFICATION_VENDOR);
+        
+        System.out.println("JAVA_VM_INFO :"+SystemUtils.JAVA_VM_INFO);
+        System.out.println(SystemUtils.JAVA_VM_INFO);
+        System.out.println(SystemUtils.JAVA_VM_NAME);
+        System.out.println(SystemUtils.JAVA_VM_VENDOR);
+        System.out.println(SystemUtils.JAVA_VM_VERSION);
+        
+        System.out.println(SystemUtils.OS_NAME);
+        System.out.println(SystemUtils.OS_ARCH);
+        System.out.println(SystemUtils.OS_VERSION);
+
+        System.out.println("OS : "+SystemUtils.OS_NAME +"("+SystemUtils.OS_ARCH+" " +ArchUtils.getProcessor().getType()+"), version " +SystemUtils.OS_VERSION+"");
+        System.out.println("JAVA : "+SystemUtils.JAVA_VENDOR+" java version "+SystemUtils.JAVA_VERSION +", class "+SystemUtils.JAVA_CLASS_VERSION);
+        System.out.println("JAVA_VM : "+SystemUtils.JAVA_VM_NAME+" (build "+SystemUtils.JAVA_VM_VERSION +", "+ SystemUtils.JAVA_VM_INFO+")");
+    
+        Properties props=System.getProperties();  
+        System.out.println("Java的运行环境版本："+props.getProperty("java.version"));  
+        System.out.println("Java的运行环境供应商："+props.getProperty("java.vendor"));  
+        System.out.println("Java供应商的URL："+props.getProperty("java.vendor.url"));  
+        System.out.println("Java的安装路径："+props.getProperty("java.home"));  
+        System.out.println("Java的虚拟机规范版本："+props.getProperty("java.vm.specification.version"));  
+        System.out.println("Java的虚拟机规范供应商："+props.getProperty("java.vm.specification.vendor"));  
+        System.out.println("Java的虚拟机规范名称："+props.getProperty("java.vm.specification.name"));  
+        System.out.println("Java的虚拟机实现版本："+props.getProperty("java.vm.version"));  
+        System.out.println("Java的虚拟机实现供应商："+props.getProperty("java.vm.vendor"));  
+        System.out.println("Java的虚拟机实现名称："+props.getProperty("java.vm.name"));  
+        System.out.println("Java运行时环境规范版本："+props.getProperty("java.specification.version"));  
+        System.out.println("Java运行时环境规范供应商："+props.getProperty("java.specification.vender"));  
+        System.out.println("Java运行时环境规范名称："+props.getProperty("java.specification.name"));  
+        System.out.println("Java的类格式版本号："+props.getProperty("java.class.version"));  
+        System.out.println("Java的类路径："+props.getProperty("java.class.path"));  
+        System.out.println("加载库时搜索的路径列表："+props.getProperty("java.library.path"));  
+        System.out.println("默认的临时文件路径："+props.getProperty("java.io.tmpdir"));  
+        System.out.println("一个或多个扩展目录的路径："+props.getProperty("java.ext.dirs"));  
+        System.out.println("操作系统的名称："+props.getProperty("os.name"));  
+        System.out.println("操作系统的构架："+props.getProperty("os.arch"));  
+        System.out.println("操作系统的版本："+props.getProperty("os.version"));  
+        System.out.println("文件分隔符："+props.getProperty("file.separator"));//在 unix 系统中是＂／＂ System.out.println("路径分隔符："+props.getProperty("path.separator"));//在 unix 系统中是＂:＂ System.out.println("行分隔符："+props.getProperty("line.separator"));//在 unix 系统中是＂/n＂ System.out.println("用户的账户名称："+props.getProperty("user.name"));  
+        System.out.println("用户的主目录："+props.getProperty("user.home"));  
+        System.out.println("用户的当前工作目录："+props.getProperty("user.dir"));  
+    }
+
+}