How to use StringBuffer in java What is Yasser Ibrahim @Jobilize

Author: Yasser Ibrahim

Exam Permalink:

https://www.jobilize.com/java-certification-questions

Question Permalink:

https://www.jobilize.com/how-to-use-stringbuffer-in-java

Question 151 / 297: What is the result of compiling and running the following code?

public class Tester {

	public static void main(String[] args) {
		String s = "";
		Integer x = 5;
		StringBuffer sb = new StringBuffer();
		if (x < 15)
			s.concat("javachamp");
		else
			sb.append("javachamp");
		    System.out.print(s + sb);
	}

}

A javachamp

B javachamp javachamp

C No output is produced

D Compilation error

<< First < Previous Next > Last >>

Explanation:

Strings are immutable. s.concat() will produce a new String object and will not modify the original String object s.

Exam Home Page

https://www.jobilize.com/java-certification-questions

Oracle Certified Professional Java Programmer

Author:

JavaChamp TeamSenior Java Developer

QuizOver.com

Germany

Access: Public Instant Grading

Yasser IbrahimFounder

Jobilize.com

U.A.E.

Ask

	2 SCEA Java Architect By JavaChamp Team Start Exam
	Social Psychology MCQ By Saylor Foundation Start Quiz
	32 Biology 32 Plant Reproduction MCQ By OpenStax Start Quiz
	Are you part of the R5 Family? By Anonymous User Start Quiz
	Microbiology Practice Test By Sandhills MLT Start Test
	17 Dr. Avery GI Bio Path quiz By Brooke Delaney Start Exam
	Are you a 5sos fan? By Rylee Minllic Start Quiz
	12 Sociology 12 Gender, Sex, and Sexuality MCQ By OpenStax Start Quiz
	4 Sociology 04 Society and Social Interaction MCQ By OpenStax Start Quiz
	Macroeconomics MCQ By Candice Butts Start Quiz
	English Proficiency Test By Anindyo Mukhopadhyay Start Quiz

Copy and paste the following HTML code into your website or blog.

Recipient name: *
Recipient email: *