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实现equals()
参数必须是Object,而不能是外围类
覆盖equals()时,也要覆盖相应的hashCode(),与equals(),保持一致
另外注意String的默认值是null
public class Person { private String name; private int birthYear; byte[] raw; <strong> @Override public boolean equals(Object o){ if(this == o){ return true; } if(!(o instanceof Person)){ return false; } Person other = (Person)o; return StringUtils.equals(name, other.name) && birthYear == other.birthYear && Arrays.equals(raw, other.raw); }</strong> public static void main(String args[]){ Person p = new Person(); Person p2 = new Person(); System.out.println(p.equals(p2)); } }
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原文地址:http://blog.csdn.net/kkgbn/article/details/45101717