下面这个哪个高手能帮我分析一下错误。 - 黑马程序员技术交流社区

package Test2;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.util.Collection;
import java.util.Properties;
public class demo5 {
public static void main(String[] args) throws IOException, Exception, ReflectiveOperationException {
InputStream ips = new FileInputStream("config.properties");
Properties props = new Properties();
props.load(ips);
ips.close();
String classforName = props.getProperty("className");
Class clazz= Class.forName(classforName).getClass();
Collection collection = (Collection) clazz.newInstance();
person p = new person(2,3);
person p2 = new person(3,4);
person p3 = new person(1,3);
person p4 = new person(1,3);
person p5 = new person(2,3);
collection.add(p);
collection.add(p2);
collection.add(p3);
collection.add(p4);
collection.add(p5);
}
}
class person{
int age;
int Str;
person(int a,int b){
this.age = a;
this.Str = b;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Str;
result = prime * result + age;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
person other = (person) obj;
if (Str != other.Str)
return false;
if (age != other.age)
return false;
return true;
}
}

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