PropertyPermission类equals()方法 (PropertyPermission Class equals() method)

• equals() method is available in java.util package.

  equals()方法在java.util包中可用。

• equals() method is used to check whether this object and the given object (ob) are equal or not.

  equals()方法用于检查此对象与给定对象(ob)是否相等。

• equals() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  equals()方法是一种非静态方法，仅可通过类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。

• equals() method does not throw an exception at the time of checking the equality of two objects.

  在检查两个对象的相等性时， equals()方法不会引发异常。

Syntax:

句法：

public boolean equals(Object ob);

Parameter(s):

参数：

• Object ob – represents the object to be tested with this object in this PropertyPermission.

  对象ob –表示要在此PropertyPermission中与此对象一起测试的对象。

Return value:

返回值：

The return type of the method is boolean, it returns true when both the object are same, equals otherwise it returns false.

该方法的返回类型为boolean ，当两个对象相同时返回true ，否则返回false 。

Example:

例：

// Java program to demonstrate the example // of boolean equals(Object ob) method of // PropertyPermissionimport java.util.*;public class EqualsOfPropertyPermission {
    public static void main(String arg[]) {
     // Instantiates two PropertyPermission object  PropertyPermission prop_perm1 = new PropertyPermission("os.version", "write");  PropertyPermission prop_perm2 = new PropertyPermission("os.name", "read");  // By using equals() method is to  // whether two PropertyPermission  // objects are same or not in terms  // of name and actions  boolean status = prop_perm1.equals(prop_perm2);  System.out.print("prop_perm1.equals(prop_perm2): ");  System.out.println(status); }}

Output

输出量

prop_perm1.equals(prop_perm2): false

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