1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | <code class = "hljs cs" > import java.util.Properties; public class SystemDemo { public static void main(String[] args){ Properties pro = System.getProperties(); //获取所有属性信息 for (Object obj:pro.keySet()){ String value = (String) pro.get(obj); System.out.println(value); } //获取制定属性信息 String value = System.getProperty( "os.name" ); System.out.println(value); //自定义属性信息 System.setProperty( "football" , "good" ); System.out.println(System.getProperty( "football" )); //在jvm启动时,动态加载属性信息。 //待续…… } } </code> |
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