Test3.java

import java.net.URL;
import java.security.Security;

public class Test3 {

    public static void main(String... args) throws Exception {
        Security.setProperty("networkaddress.cache.ttl" , "0");
        URL url = new URL("http://google.com");
        for (int i = 0; i < 100; i++) {
            System.out.println(url.equals(new URL("http://google.com")));
        }
    }

}