Java String Output MCQ Questions and Answers

Practice Java String output MCQ questions based on real Java code snippets and programming examples. This quiz is designed to help learners improve their understanding of String behavior, String methods, String comparison, and output prediction questions frequently asked in technical interviews.

The questions in this test require you to analyze Java programs and determine their output. Topics covered include String literals, String objects, String concatenation, String immutability, String methods, StringBuffer, StringBuilder, and common interview-oriented programming scenarios.

Why Practice Java String Output Questions?

Output-based questions are among the most common Java interview questions because they test conceptual understanding rather than memorization. To solve such questions correctly, candidates must understand how Java Strings are stored, compared, modified, and processed during program execution.

Many Java interviews include String code snippets where applicants are required to predict the program output. These questions help evaluate knowledge of String immutability, object references, String pooling, method behavior, and operator precedence. Regular practice improves analytical thinking and debugging skills.

Important Topics Covered in Java String Output MCQs


Instructions

Topic- Java - String

The test consists of 14 questions.

No negative marking for this test.

No Time limit

The pass percentage is 70%

The correct answer with a description will be displayed after the answer has been marked.

Submit the test to calculate your score once you are done with all the questions.

Complexity Level- Moderate




Q1: What will be the output of the below code snippet?

String s1 = "Hello";
String s2 = "John";
System.out.println(s1.concat(s2));















Q2: What will be the output of the below code snippet?

StringBuffer sb = new StringBuffer();
sb.append("Hi");
sb.append("John");
System.out.println(sb.length());















Q3: String class in Java is immutable.

What does the above statement mean?











Q4: Which of the following are valid string functions?



















Q5: Which of the following string initialization is correct?

1. String teststr = "test";
2. String teststr2 = new String ("test2");















Q6: What will be the output of the below code snippet?

String s1 = "Hello";
String s2 = "John";
System.out.println(s1.equals(s2));















Q7: What will be the output of the below code snippet?

String teststr = "testing";
char[] arr=teststr.toCharArray();
for(int p=arr.length-1;p>=0;p--) {
System.out.print(arr[p]);
}
















Q8: Select the correct output of the below code snippet:

String str = "Hi";
str.concat("John");
System.out.println(str.length());















Q9: Select the correct output of the below code snippet:

String[] strArr = {"hi","john","how","are", "you"};
System.out.println(strArr.length);















Q10: Which of the following methods is used to find the length of a String in Java?















Q11: Which of the following is not a valid string function in Java?















Q12: Which method removes whitespace from the beginning and end of a String in Java?















Q13: Select the correct output of the below code snippet:

String str7 = "orange";
String str8 = "orange";
System.out.println(str7 == str8);















Q14: Select the correct output of the below code snippet:

String str7 = "orange";
String str8 = new String("orange");
System.out.println(str7 == str8);
























How Java String Output Questions Help in Interviews

Java String output questions are widely used in interviews to assess a candidate's understanding of core Java concepts. Unlike theoretical questions, output-based problems require candidates to carefully analyze the execution of a program and identify the correct result.

These questions improve problem-solving ability, attention to detail, and coding confidence. By practicing Java String output MCQs regularly, learners become better prepared for technical interviews, coding assessments, certification exams, and real-world software development tasks.

Master Java String Concepts with More Practice

Continue your preparation with another Java String quiz that focuses on important concepts such as String literals, String objects, String methods, String comparison, and commonly asked interview questions.

Java String Concepts Quiz

Practice Java String theory questions and strengthen your understanding of core String concepts.