compareTo() and equals() for enum data type : enum methods « Data Type « Java Tutorial

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Java Tutorial » Data Type » enum methods

2. 44. 2. compareTo() and equals() for enum data type


enum Week {

  Monday, Tuesday, Wednesday, Thursday, Friday, Saturaday, Sunday

}



public class MainClass {

  public static void main(String args[]) {



    Week day1, day2, day3;

    day1 = Week.Monday;

    day2 = Week.Tuesday;

    day3 = Week.Friday;



    // 

    if (day1.compareTo(day2) < 0)

      System.out.println(day1 + " comes before " + day2);



    if (day2.compareTo(day3) > 0)

      System.out.println(day2 + " comes before " + day3);



    if (day1.compareTo(day3) == 0)

      System.out.println(day1 + " equals " + day3);



  }

}

Monday comes before Tuesday

2. 44. enum methods
	2. 44. 1.	Obtaining all ordinal values using ordinal()
	2. 44. 2.	compareTo() and equals() for enum data type
	2. 44. 3.	Using the built-in enumeration methods: values( )
	2. 44. 4.	Using valueOf()
	2. 44. 5.	Switch statement with enum
	2. 44. 6.	Adding Members to an Enumeration Class
	2. 44. 7.	Use the built-in enumeration methods.
	2. 44. 8.	Use an enum constructor, instance variable, and method.
	2. 44. 9.	Demonstrate ordinal(), compareTo(), and equals().

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