Java Calendar.equals()用法及代码示例

java.util.Calendar.equals()是java.util包Calendar类中的方法。该方法将此Calendar与指定的Object进行比较。如果此对象与object相等，则该方法返回true。如果不是这种情况，即两个日历之间的参数存在差异，则返回false。

用法:

public boolean equals(Object object)

Where, object is the Object 
to be compared with.

下面是一些示例，以更好的方式理解Calendar.equals()函数的实现。

示例1:

Java

// Java code to show the use of 
// equals() method of Calendar class 
import java.util.*; 
  
class GFG { 
  
// Driver code 
public static void main(String[] args)  
            throws InterruptedException { 
                  
    // creating calendar object 
    Calendar cal_obj1 = Calendar.getInstance(); 
    Calendar cal_obj2 = cal_obj1; 
                  
    // printing current date 
    System.out.println("Time 1 : " + cal_obj1.getTime()); 
                  
    // printing current date 
    System.out.println("Time 2 : " + cal_obj2.getTime()); 
      
    // checking if 1st date is equal to 2nd date 
    // and printing the result 
    System.out.println(cal_obj1.equals(cal_obj2)); 
    } 
}

输出：

Time 1 : Thu Mar 01 09:36:17 UTC 2018
Time 2 : Thu Mar 01 09:36:17 UTC 2018
true

示例2:

Java

// Java code to show the use of 
// equals() method of Calendar class 
import java.util.*; 
  
class GFG { 
      
    // Driver code 
    public static void main(String[] args) { 
  
    // creating calendar objects 
    Calendar cal_obj1 = Calendar.getInstance(); 
    Calendar cal_obj2 = Calendar.getInstance(); 
  
    // displaying the current date 
    System.out.println("Current date is : " + 
                        cal_obj1.getTime()); 
  
    // changing year in cal_obj2 calendar 
    cal_obj2.set(Calendar.YEAR, 2010); 
      
    // displaying the year 
    System.out.println("Year is " +  
                        cal_obj2.get(Calendar.YEAR)); 
  
    // check if calendar date is equal to current date 
    System.out.println("Result : " +  
                        cal_obj1.equals(cal_obj2)); 
    } 
}

输出：

Current date is : Thu Mar 01 09:39:30 UTC 2018
Year is 2010
Result : false

相关用法

注：本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 Calendar.equals() method in Java。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。