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Same Object用作Map中两个条目的键

我有一个Employee类,如下所示.

class Employee {
int empId;
String empName;

public Employee() {
}

Employee(int empId, String empName) {
    this.empId = empId;
    this.empName = empName;
}

public int getEmpId() {
    return empId;
}

public void setEmpId(int empId) {
    this.empId = empId;
}

public String getEmpName() {
    return empName;
}

public void setEmpName(String empName) {
    this.empName = empName;
}

@Override
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + empId;
    result = prime …
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java object hashmap

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1
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