Java.util.PropertyPermission.equals() Java.util.Properties.stringPropertyNames() Java.util.PropertyPermission.getActions() 描述 所述java.util.PropertyPermission.equals(Object OBJ)方法检查该对象是否等于OBJ。即它与此对象具有相同的名称和操作 声明 以下是java.util.PropertyPermission.equals()方法的声明 public boolean equals(Object obj) 参数 obj - 要检查的对象。 返回值 如果给定对象等于此对象(即相同的名称和操作),则此方法返回true。 异常 NA 实例 以下示例显示了java.util.PropertyPermission.equals(Object)方法的用法。 package com.tutorialspoint; import java.util.PropertyPermission; public class PropertyPermissionDemo { private static PropertyPermission permission; public static void main(String[] args) { // Build property permissions collection permission = new PropertyPermission("java.home.usr", "read"); // Check file read permissions checkFileReadPermissions("java.home.usr"); // Check file write permissions checkFileWritePermissions("java.home.usr"); } private static void checkFileReadPermissions(String path) { // Check permissions are equal if(permission.equals(new PropertyPermission(path, "read"))) { System.out.println("Has permissions on "+path+" for read"); } } private static void checkFileWritePermissions(String path) { // Check permissions are equal if(permission.equals(new PropertyPermission(path, "write"))) { System.out.println("Has permissions on "+path+" for write"); } } } 让我们编译并运行上面的程序,这将产生以下结果 Has permissions on java.home.usr for read Java.util.Properties.stringPropertyNames() Java.util.PropertyPermission.getActions()