Given: import java.util.*; public class Ref { public static void main(String[] args) { StringBuilder s1 = new StringBuilder("Hello Java!"); String s2 = s1.toString(); List lst = new ArrayList (); lst.add(s2); System.out.println(s1.getClass()); System.out.println(s2.getClass()); System.out.println(lst.getClass()); } } What is the result?

C. class java.lang.StringBuilder

D. class java.lang.StringBuilder

Oracle

1Z0-803 · Question #222

1Z0-803 Question #222: Real Exam Question with Answer & Explanation

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Question

Given: import java.util.*; public class Ref { public static void main(String[] args) { StringBuilder s1 = new StringBuilder("Hello Java!"); String s2 = s1.toString(); List<String> lst = new ArrayList<String>(); lst.add(s2); System.out.println(s1.getClass()); System.out.println(s2.getClass()); System.out.println(lst.getClass()); } } What is the result?

Options

Aclass java.lang.String
Bclass java.lang.Object
Cclass java.lang.StringBuilder
Dclass java.lang.StringBuilder

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