应该是这样的我重写equals重新试了一下,的确如此
public class ReflectPoint {
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + x;
result = prime * result + y;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ReflectPoint other = (ReflectPoint) obj;
if (x != other.x)
return false;
if (y != other.y)
return false;
return true;
}
private int x;
public int y;
/*
public String str1 = "hellojava";
public String str2 = "jakdbbbbbizad";
public String str3 = "hahahaha";
*/
public ReflectPoint(int x, int y) {
super();
this.x = x;
this.y = y;
}
public String toString()
{
return x+" : "+y ;
}
}
测试类
public class Test2 {
public static void main(String[] args)
{
Collection c = new HashSet();
ReflectPoint p1 = new ReflectPoint(3,3);
ReflectPoint p2 = new ReflectPoint(3,5);
ReflectPoint p3 = new ReflectPoint(3,3);