- Java.util Package Classes
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- Java.util - ArrayDeque
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- Java.util - GregorianCalendar
- Java.util - HashMap
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- Java.util - Hashtable
- Java.util - IdentityHashMap
- Java.util - LinkedHashMap
- Java.util - LinkedHashSet
- Java.util - LinkedList
- Java.util - ListResourceBundle
- Java.util - Locale
- Java.util - Observable
- Java.util - PriorityQueue
- Java.util - Properties
- Java.util - PropertyPermission
- Java.util - PropertyResourceBundle
- Java.util - Random
- Java.util - ResourceBundle
- Java.util - ResourceBundle.Control
- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
- Java.util - StringTokenizer
- Java.util - Timer
- Java.util - TimerTask
- Java.util - TimeZone
- Java.util - TreeMap
- Java.util - TreeSet
- Java.util - UUID
- Java.util - Vector
- Java.util - WeakHashMap
- Java.util Package Extras
- Java.util - Interfaces
- Java.util - Exceptions
- Java.util - Enumerations
- Java.util Useful Resources
- Java.util - Useful Resources
- Java.util - Discussion
Java Date compareTo() Method
Description
The Java Date compareTo(Date anotherDate) method compares two Dates.
Declaration
Following is the declaration for java.util.Date.compareTo() method
public int compareTo(Date anotherDate)
Parameters
anotherDate − date to be compared to
Return Value
0 if the argument Date is equal to this Date; a value less than 0 if this Date is before the Date argument; and a value greater than 0 if this Date is after the Date argument.
Exception
NullPointerException − if anotherDate is null.
Comparing Date to Come Before a Date Example
The following example shows the usage of Java Date compareTo() method. We're creating two Date instances of different dates. Each date is compared using compareTo() method and result is printed.
package com.tutorialspoint; import java.util.Date; public class DateDemo { public static void main(String[] args) { // create a date Date date1 = new Date(122, 10, 4); Date date2 = new Date(122, 11, 4); System.out.println("Date1: " + date1.toString()); System.out.println("Date2: " + date2.toString()); int result = date1.compareTo(date2); if( result == 0) { System.out.println("Dates are same."); } else if (result == 1) { System.out.println("Date1 is after Date2."); } else if (result == -1) { System.out.println("Date1 is before Date2."); } } }
Output
Let us compile and run the above program, this will produce the following result −
Date1: Fri Nov 04 00:00:00 IST 2022 Date2: Sun Dec 04 00:00:00 IST 2022 Date1 is before Date2.
Comparing Date to Come After a Date Example
The following example shows the usage of Java Date compareTo() method. We're creating two Date instances of different dates. Each date is compared using compareTo() method and result is printed.
package com.tutorialspoint; import java.util.Date; public class DateDemo { public static void main(String[] args) { // create a date Date date1 = new Date(122, 11, 5); Date date2 = new Date(122, 11, 4); System.out.println("Date1: " + date1.toString()); System.out.println("Date2: " + date2.toString()); int result = date1.compareTo(date2); if( result == 0) { System.out.println("Dates are same."); } else if (result == 1) { System.out.println("Date1 is after Date2."); } else if (result == -1) { System.out.println("Date1 is before Date2."); } } }
Output
Let us compile and run the above program, this will produce the following result −
Date1: Mon Dec 05 00:00:00 IST 2022 Date2: Sun Dec 04 00:00:00 IST 2022 Date1 is after Date2.
Comparing Date to be Same as Given Date Example
The following example shows the usage of Java Date compareTo() method. We're creating two Date instances of same date. Each date is compared using compareTo() method and result is printed.
package com.tutorialspoint; import java.util.Date; public class DateDemo { public static void main(String[] args) { // create a date Date date1 = new Date(122, 11, 5); Date date2 = new Date(122, 11, 5); System.out.println("Date1: " + date1.toString()); System.out.println("Date2: " + date2.toString()); int result = date1.compareTo(date2); if( result == 0) { System.out.println("Dates are same."); } else if (result == 1) { System.out.println("Date1 is after Date2."); } else if (result == -1) { System.out.println("Date1 is before Date2."); } } }
Output
Let us compile and run the above program, this will produce the following result −
Date1: Mon Dec 05 00:00:00 IST 2022 Date2: Mon Dec 05 00:00:00 IST 2022 Dates are same.
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