日期格式等于()Java 中的方法,示例
原文:https://www . geesforgeks . org/dateform-equals-method-in-Java-with-examples/
日期格式类的等于()方法用于比较两个日期格式对象。如果此日期格式等于传递的对象,则方法返回真,否则返回假。
语法:
public boolean equals(Object obj)
参数:该方法取一个对象类型的参数对象,并引用要与该日期格式对象进行比较的对象。
返回值:如果两个对象相等,则该方法返回布尔真,否则该方法返回假。
以下程序说明了日期格式的 equals()方法: 示例 1:
// Java code to illustrate equals() method
import java.text.*;
import java.util.*;
public class DateFormat_Demo {
public static void main(String[] args)
{
// Initializing the first formatter
DateFormat DFormat1
= DateFormat.getDateInstance();
// Initializing the second formatter
DateFormat DFormat2
= DateFormat.getDateInstance();
// Displaying both the Formats
Date date = new Date();
String str_Date1
= DFormat1.format(date);
System.out.println("First: "
+ (str_Date1));
String str_Date2
= DFormat2.format(date);
System.out.println("Second: "
+ (str_Date2));
// Comparing both the objects
System.out.println("Equality: "
+ DFormat1.equals(DFormat2));
}
}
Output:
First: Mar 27, 2019
Second: Mar 27, 2019
Equality: true
例 2:
// Java code to illustrate equals() method
import java.text.*;
import java.util.*;
public class DateFormat_Demo {
public static void main(String[] args)
{
// Initializing the first formatter
DateFormat DFormat1
= DateFormat.getDateInstance();
// Initializing the second formatter
DateFormat DFormat2
= DateFormat.getTimeInstance();
// Displaying both the Formats
Date date = new Date();
String str_Date1
= DFormat1.format(date);
System.out.println("First: "
+ (str_Date1));
String str_Date2
= DFormat2.format(date);
System.out.println("Second: "
+ (str_Date2));
// Comparing both the objects
System.out.println("Equality: "
+ DFormat1.equals(DFormat2));
}
}
Output:
First: Mar 27, 2019
Second: 11:04:25 AM
Equality: false
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