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Java 实现等于方法
实现等于方法
实例源码：
源代码：
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/**来 自 n o w j a v a . c o m**/2
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public class TestEquality24
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{6
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public static void main(String[] args)8
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{10
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Employee emp1 = new Employee("M", "A");12
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Employee emp2 = new Employee("M", "A");14
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if (emp1.equals(emp2))16
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System.out.println("These employees are the same.");18
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else20
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System.out.println("These are two different employees.");22
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}24
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}26
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class Employee29
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{31
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private String lastName;33
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private String firstName;35
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public Employee(String lastName, String firstName)38
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{40
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this.lastName = lastName;42
/** 43
来自 时代Java - N o w J a v a . c o m**/44
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this.firstName = firstName;46
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}48
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public String getLastName()51
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{53
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return this.lastName;55
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}57
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public String getFirstName()60
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{62
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return this.firstName;64
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}66
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public boolean equals(Object obj)69
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{71
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// an object must equal itself73
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if (this == obj)75
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return true;77
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// no object equals null80
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if (this == null)82
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return false;84
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// objects of different types are never equal87
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if (this.getClass() != obj.getClass())89
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return false;91
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