java的equals方法_Java Vector equals（）方法与示例

「爱情、让人受尽委屈。」 2023-03-05 12:53 17阅读 0赞

java的equals方法

## 向量类的equals()方法 **(**Vector 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 Vector is the same or equals to the given object (ob) or not.
    
    **equals()方法**用于检查此Vector与给定对象(ob)是否相同。
 *  **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 checked for equality.
    
    对象ob –表示要检查其是否相等的对象。

**Return value:**

**返回值：**

The return type of the method is boolean, it returns ***true*** when this object and the given object are equal otherwise it returns ***false***.

该方法的返回类型是布尔值 ，当该对象与给定对象相等否则返回***假*** ，则返回***true。***

**Example:**

**例：**

// Java program to demonstrate the example 
    // of boolean equals(Object ob) method 
    // of Vector 
    
    import java.util.*;
    
    public class EqualsOfVector {
        
        public static void main(String[] args) {
        
            // Instantiates a Vector object  with
            // initial capacity of "10"
            Vector < String > v1 = new Vector < String > (10);
            Vector < String > v2 = new Vector < String > (10);
    
            // By using add() method is to add the
            // elements in this v1
            v1.add("C");
            v1.add("C++");
            v1.add("JAVA");
    
            // By using add() method is to add the
            // elements in this v2
            v2.add("SQL");
            v2.add("DBMS");
    
            // Display Vector
            System.out.println("v1: " + v1);
            System.out.println("v2: " + v2);
    
            // By using equals() method is to
            // check whether object v1 and v2 are
            // equals or not
            boolean status = v1.equals(v2);
    
            // Display status
            System.out.println("v1.equals(v2): " + status);
        }
    }

**Output**

**输出量**

v1: [C, C++, JAVA]
    v2: [SQL, DBMS]
    v1.equals(v2): false

> 翻译自: [https://www.includehelp.com/java/vector-equals-method-with-example.aspx][https_www.includehelp.com_java_vector-equals-method-with-example.aspx]

java的equals方法

[https_www.includehelp.com_java_vector-equals-method-with-example.aspx]: https://www.includehelp.com/java/vector-equals-method-with-example.aspx