Java 中的日期哈希码()方法，示例
原文:https://www . geesforgeks . org/date-hashcode-method-in-Java-with-examples/
Java 日期类的 hashCode() 方法返回一个值，该值是该对象的哈希代码。
语法:
public int hashCode()
参数:函数不接受任何参数。
返回值:返回该对象的哈希值。
异常:函数不抛出任何异常。
下面的程序演示了上述功能:
// Java code to demonstrate
// hashCode() function of Date class
import java.util.Date;
import java.util.Calendar;
public class GfG {
// main method
public static void main(String[] args)
{
// creating a Calendar object
Calendar c1 = Calendar.getInstance();
// set Month
// MONTH starts with 0 i.e. ( 0 - Jan)
c1.set(Calendar.MONTH, 11);
// set Date
c1.set(Calendar.DATE, 05);
// set Year
c1.set(Calendar.YEAR, 1996);
// creating a date object with specified time.
Date dateOne = c1.getTime();
System.out.println("Date: " + dateOne);
// Prints hash Code
System.out.println("HashCode: "
+ dateOne.hashCode());
}
}
Output:
Date: Thu Dec 05 08:22:04 UTC 1996
HashCode: -629399711
// Java code to demonstrate
// hashCode() function of Date class
import java.util.Date;
import java.util.Calendar;
public class GfG {
// main method
public static void main(String[] args)
{
// creating a Calendar object
Calendar c1 = Calendar.getInstance();
// set Month
// MONTH starts with 0 i.e. ( 0 - Jan)
c1.set(Calendar.MONTH, 11);
// set Date
c1.set(Calendar.DATE, 21);
// set Year
c1.set(Calendar.YEAR, 1999);
// creating a date object with specified time.
Date dateOne = c1.getTime();
System.out.println("Date: " + dateOne);
// Prints hash Code
System.out.println("HashCode: "
+ dateOne.hashCode());
}
}
Output:
Date: Tue Dec 21 08:22:09 UTC 1999
HashCode: 871724355
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