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Java TimeZone hasSameRules() Method with Example

TimeZone Class hasSameRules() method: Here, we are going to learn about the hasSameRules() method of TimeZone Class with its syntax and example.
Submitted by Preeti Jain, on March 13, 2020

TimeZone Class hasSameRules() method

  • hasSameRules() method is available in java.util package.
  • hasSameRules() method is used to check whether this time zone has the same rule and offset as the given time zone (tz) or not.
  • hasSameRules() 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.
  • hasSameRules() method does not throw an exception at the time of checking rule and offset.


    public boolean hasSameRules(TimeZone tz);


  • TimeZone tz – represents the other time zone object to compare with this time zone.

Return value:

The return type of the method is boolean, it returns true when this time zone and the given time zone (tz) has same rule and offset otherwise it returns false.


// Java program to demonstrate the example 
// of boolean hasSameRules(TimeZone tz)
// method of TimeZone 

import java.util.*;

public class HasSameRulesOfTimeZone {
    public static void main(String args[]) {
        // Instantiates two TimeZone object
        TimeZone tz1 = TimeZone.getTimeZone("Africa/Asmera");
        TimeZone tz2 = TimeZone.getDefault();

        // Display tz1 , tz1
        System.out.println("tz1: " + tz1);
        System.out.println("tz2: " + tz2);

        // By using hasSameRules() method is to
        // check whether two timezone has same 
        // rules and offset or not
        boolean status = tz1.hasSameRules(tz2);

        System.out.print("tz1.hasSameRules(tz2): ");


tz1: sun.util.calendar.ZoneInfo[id="Africa/Asmera",offset=10800000,dstSavings=0,useDaylight=false,transitions=6,lastRule=null]
tz2: sun.util.calendar.ZoneInfo[id="GMT",offset=0,dstSavings=0,useDaylight=false,transitions=0,lastRule=null]
tz1.hasSameRules(tz2): false

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