Given the definitions of the MyString class and the Test class:

MyString.java:
package p1;
class MyString {
String msg;
MyString(String msg) {
this.msg = msg;
}
}

Test.java:
package p1;
public class Test {
public static void main(String[] args) {
System.out.println("Hello " + new StringBuilder("Java SE 8"));
System.out.println("Hello " + new MyString("Java SE 8"));
}
}

What is the result?

Question

Given the definitions of the MyString class and the Test class:

MyString.java:
package p1;
class MyString {
 String msg;
 MyString(String msg) {
 this.msg = msg;
 }
}

Test.java:
package p1;
public class Test {
 public static void main(String[] args) {
 System.out.println("Hello " + new StringBuilder("Java SE 8"));
 System.out.println("Hello " + new MyString("Java SE 8"));
 }
}

What is the result?

Accepted Answer

C. Hello Java SE 8
Hello p1.MyString@<hashcode>>

Answer

A. Hello Java SE 8
Hello Java SE 8

Answer

B. Hello java.lang.StringBuilder@> Hello p1.MyString@>

Answer

D. Compilation fails at the Test class.

1Z0-808 Question #13: Real Exam Question with Answer & Explanation

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