Created
July 14, 2022 09:52
-
-
Save daveRanjan/bea5fdca57479ba15aff206985084a44 to your computer and use it in GitHub Desktop.
Coding Question 1
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import java.util.HashMap; | |
import java.util.Map; | |
public class HashMapTest { | |
public static class A { | |
String name; | |
public int hashCode() { | |
return name.hashCode(); | |
//return 10; | |
} | |
public boolean equals(Object o) { | |
if (o instanceof A) { | |
return name.equals(((A) o).name); | |
} | |
return false; | |
} | |
} | |
public static void main(String[] args) { | |
Map<A, Integer> map = new HashMap<>(); | |
A a1 = new A(); | |
a1.name="one"; | |
map.put(a1, 1); | |
a1.name="two"; | |
A a2=new A(); | |
a2.name="one"; | |
map.put(a2, 2); | |
//What will be the output below? | |
System.out.println(map.get(a1)); | |
System.out.println(map.get(a2)); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment