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Bell Aimsaard's questions

Martin Hope
Bell Aimsaard
Asked: 2024-09-29 15:58:48 +0800 CST
  • 6

我创建Person如下：

public class Person {
    private String sCode;
    private String sDate;

    Person(String sCode, String sDate) {
        this.sCode = sCode;
        this.sDate = sDate;
    }// Constructor and other methods...

    @Override
    boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null || getClass() != obj.getClass()) return false;
        Person oPerson = (Person) obj;
        return oPerson.sCode == this.sCode && oPerson.sDate == this.sDate;
    }

    @Override
    public int hashCode() {
        return Objects.hash(this.sCode, this.sDate);
    }
}

我想将Person对象存储在HashSet（personSet）中：

HashSet<Person> personSet = new HashSet<>();
Person person1 = new Person("Aman", "2021-01-01");
Person person2 = new Person("Aman", "2021-01-01");
personSet.add(person1);
personSet.add(person2);
System.out.println(personSet.size());  //Expected size to be "1"

但是我收到Caught: java.lang.StackOverflowError以下错误：

Caught: java.lang.StackOverflowError
java.lang.StackOverflowError
    at Person.equals(Person.groovy:12)

有人可以告诉我为什么我的代码会抛出这个错误吗？

groovy