枚举 equals
(Enum Class equals() method)
- equals() method is available in java.lang
equals()方法在java.lang包中可用。 - equals() method
equals()方法用于检查该对象与给定对象的相等性或不相等性，换句话说，我们可以说该方法用于比较两个对象。 - equals() method
equals()方法是一种非静态方法，仅可通过类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。 - equals() method
equals()方法不会引发异常。
Syntax:
句法：
public final boolean equals(Object obj2);Parameter(s):
参数：
- Object ob2
对象ob2 –表示要比较的对象。
Return value:
返回值：
The return type of this method is boolean, it returns the following values based on the given cases,
此方法的返回类型为boolean ，它根据给定的情况返回以下值：
- It returns true
如果Object1等于Object2，则返回true 。 - It returns false
如果Object1不等于Object2，则返回false 。
Example:
例：
// Java program to demonstrate the example
// of boolean equals(Object obj2) method of
// Enum class
enum Weeks {
SUN,
MON,
TUE,
WED,
THU,
FRI,
SAT;
}
public class Equals {
public static void main(String args[]) {
Weeks w1 = Weeks.SUN;
Weeks w2 = Weeks.MON;
Weeks w3 = Weeks.TUE;
Weeks w4 = Weeks.WED;
Weeks w5 = Weeks.THU;
Weeks w6 = Weeks.FRI;
Weeks w7 = Weeks.SAT;
boolean res1 = w1.equals(w2);
boolean res2 = w2.equals(w3);
boolean res3 = w3.equals(w4);
boolean res4 = w4.equals(w2);
boolean res5 = w5.equals(w6);
System.out.println("Is" + " " + w1.name() + " " + "same as" + " " + w2.name() + " " + res1);
System.out.println("Is" + " " + w2.name() + " " + "same as" + " " + w3.name() + " " + res2);
System.out.println("Is" + " " + w3.name() + " " + "same as" + " " + w4.name() + " " + res3);
System.out.println("Is" + " " + w4.name() + " " + "same as" + " " + w2.name() + " " + res4);
System.out.println("Is" + " " + w5.name() + " " + "same as" + " " + w6.name() + " " + res5);
}
}Output
输出量
Is SUN same as MON false
Is MON same as TUE false
Is TUE same as WED false
Is WED same as MON false
Is THU same as FRI false翻译自: https://www.includehelp.com/java/enum-equals-method-with-example.aspx
枚举 equals
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