Also, check that we have used the toString method to make sure the output is printed without any error, though removing toString won’t make any difference. Then another object for Clock with the system’s default Zone and a print statement for the same. Later we’ve created an object for our clock with an assigned Zone ID of “Etc/UTC” and printed the same for confirmation. Then created our class java_clock_equals and our main class within. Similar to the first program, we began with importing two required Java Packages. ("Are the both clocks equal:" + equalResponse) Ĭode Interpretation: In the above code, we have implemented the equals method of the clock class. (java_clock2.toString()) īoolean equalResponse = java_clock1.equals(java_clock2) (java_clock1.toString()) Ĭlock java_clock2 = Clock.systemDefaultZone() Example #2Ĭlock java_clock1 = Clock.system(ZoneId.of("Etc/UTC")) So with the above code example, we have demonstrated the implementation of three basic methods of Clock class in Java. Then the third method is similar to the first one, where it prints the system clock’s time zone. the Date and Time for me, it prints the current Date and Time. The second method simply returns the clock’s current instant, i.e. The first method prints the Time Zone for the current system clock here, it prints “Asia/Kolkata”. Finally, we have out three output print lines with respective calls for methods. Then we initialized our main class with a simple Clock object. Begin with two java packages import and then create our class java_clock. (j_clock.systemDefaultZone()) Ĭode Interpretation: This example demonstrates the implementation of the getZone, instant and systemDefaultZone methods. Refer to the following programs, which include these methods and their output.Ĭlock j_clock = Clock.systemDefaultZone() To demonstrate the above-mentioned methods, we will implement these methods of Clock class in examples. Other than the above-mentioned methods, the Clock class provides other methods for specific use. public static Clock systemUTC() Examples to Implement Java Clock Rest everything is the same, from using the best available system clock to return being immutable. Similar to systemDefaultZone, best to use when the date or time is not required. public static Clock systemDefaultZone() 5. May use System.currentTimeMillis() and the return is immutable and thread-safe. Using the best available system clock, this method returns the current instant, then converting it to date and time with the default time zone. It obtains the current instant and converts it to a time or date with time zone use. To get the time zone currently used never returns null. This method of clock class overrides the Object.equals method. Returns true if the clocks are equal, else false. equalsĬompares if the clock is equal to any other clock. Simply return the current instant of the clock and not null. The following are the methods with respective descriptions. Just like any other class in Java Programming Language, Clock comes with various methods for respective usages. Now that we have understood the definition and syntax for Clock class let us learn its methods. Proper implementation of the above declaration will result in the expected output for the Clock class. This is a simple standard syntax for the Clock class, which, as we can see, extends Object. Syntax: public abstract class Clock extends Object So, now that we have understood the Clock class in java let us now understand the syntax and its usage. ![]() Not to overlook that the use of the clock is optional. The best Practice for better implementation of the Clock class is to pass it into a method where the current instant is required. ![]() FixedClock, OffsetClock, SystemClock, and TickClock are the four implementations of Java Clock these are static methods and part of the Java class.
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