equals and = operator for enum data type : enum « Data Type « Java Tutorial

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Java Tutorial » Data Type » enum

2. 43. 4. equals and = operator 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.Monday;

    day3 = Week.Monday;



    if(day1.equals(day2))

      System.out.println("Error!");



    if(day1.equals(day3))

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



    if(day2 == day3)

      System.out.println(day2 + " == " + day3);





  }

}

Error!
Monday equals Monday
Monday == Monday

2. 43. enum
	2. 43. 1.	Enumeration Fundamentals
	2. 43. 2.	How to define an enumeration
	2. 43. 3.	Enums in a Class
	2. 43. 4.	equals and = operator for enum data type
	2. 43. 5.	Comparing Enumeration Values
	2. 43. 6.	Two enumeration constants can be compared for equality by using the == relational operator
	2. 43. 7.	uses an enum, rather than interface variables, to represent the answers.
	2. 43. 8.	enum type with its own method
	2. 43. 9.	Enum type field
	2. 43. 10.	enum with switch

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