equal方法 Object類的equals方法用于檢測(cè)一個(gè)對(duì)象是否等于另外一個(gè)對(duì)象，而Object類中這個(gè)方法的定義為兩個(gè)對(duì)象是否具有相同的引用。源碼如下： Java代碼
public boolean equals(Object obj) {
return (this == obj);
}
Java代碼
/**
* @author GraMind
* @param obj
* @return
* @exception
* @see java.lang.Object#equals(java.lang.Object)
*/ @Override
public boolean equals(Object obj)
{
if (
this == obj) 1
return true;
if (obj ==
null) 2
return false;
if (getClass() != obj.getClass()) 3
return false;
ClassName other = (ClassName) obj; 4
if (id != other.id) 5
return false;
.
return true;
}
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