What will be the output of the following code – - JAVA MCQs

U

Uday Singh • 7.23K Points
Tutor III

Q. What will be the output of the following code –

Code:

import java. util.HashMap;

class newEmployee
{
private String name;
public newEmployee (String name)
{
this.name = name;
}
@Override
public int hashCode()
{
return 1;
}
}

class EmployeeClass
{
public static void main(String args[])
{
HashMap<newEmployee,String> hm=new HashMap<newEmployee,String>();
hm.put(new newEmployee(“a”),”emp1″);
hm.put(new newEmployee(“b”),”emp2″);
hm.put(new newEmployee(“a”),”emp1 overridden”);

System.out.println(hm.size());
System.out.println(hm.get(new newEmployee(“a”)));
}

}

(A) 1 emp1 OVERRIDDENQ
(B) 2 emp1 OVERRIDDEN
(C) 1 null
(D) 3 null

Correct Answer - Option(A)
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