All Courses
Get the App Signup / Login
Sign in Open App
Software Development Exam  >  Software Development Tests  >  Basics of Java  >  Test: Strings - 1 - Software Development MCQ

Test: Strings - 1 - Software Development MCQ


Test Description

15 Questions MCQ Test Basics of Java - Test: Strings - 1

Test: Strings - 1 for Software Development 2024 is part of Basics of Java preparation. The Test: Strings - 1 questions and answers have been prepared according to the Software Development exam syllabus.The Test: Strings - 1 MCQs are made for Software Development 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Strings - 1 below.
Solutions of Test: Strings - 1 questions in English are available as part of our Basics of Java for Software Development & Test: Strings - 1 solutions in Hindi for Basics of Java course. Download more important topics, notes, lectures and mock test series for Software Development Exam by signing up for free. Attempt Test: Strings - 1 | 15 questions in 30 minutes | Mock test for Software Development preparation | Free important questions MCQ to study Basics of Java for Software Development Exam | Download free PDF with solutions
Test: Strings - 1 - Question 1
Save

Which of the following best describes a String in Java?

Detailed Solution for Test: Strings - 1 - Question 1

Strings in Java represent a sequence of characters.

Test: Strings - 1 - Question 2
Save

Which of the following statements is true about mutable and immutable strings in Java?

Detailed Solution for Test: Strings - 1 - Question 2

Immutable strings are created using the 'String' class in Java, and their values cannot be modified after creation.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Strings - 1 - Question 3
Save

What is the difference between StringBuffer and StringBuilder in Java?

Detailed Solution for Test: Strings - 1 - Question 3

'StringBuffer' and 'StringBuilder' are similar in functionality, but 'StringBuffer' is synchronized (thread-safe), while 'StringBuilder' is not.

Test: Strings - 1 - Question 4
Save

Which of the following methods is used to concatenate two strings in Java?
Detailed Solution for Test: Strings - 1 - Question 4

The 'append()' method of 'StringBuilder' or 'StringBuffer' is used to concatenate strings in Java.

Test: Strings - 1 - Question 5
Save

What is the output of the following code snippet?
String str = "Hello";
str += " World";
System.out.println(str);
Detailed Solution for Test: Strings - 1 - Question 5

The '+=' operator is used to concatenate strings in Java. The initial value of 'str' is "Hello", and it is concatenated with " World" using '+='.

Test: Strings - 1 - Question 6
Save

What is the output of the following code snippet?
String str1 = "Hello";
String str2 = "Hello";
System.out.println(str1 == str2);
Detailed Solution for Test: Strings - 1 - Question 6

The '==' operator compares references for objects. In this case, both 'str1' and 'str2' point to the same string literal "Hello" in the string pool.

Test: Strings - 1 - Question 7
Save

What is the output of the following code snippet?
String str = "Hello";
str.replace('H', 'J');
System.out.println(str);
Detailed Solution for Test: Strings - 1 - Question 7

The 'replace()' method returns a new string with the specified character replaced, but it does not modify the original string.

Test: Strings - 1 - Question 8
Save

What is the output of the following code snippet?
String str = "Hello";
String newStr = str.toUpperCase();
System.out.println(newStr);
Detailed Solution for Test: Strings - 1 - Question 8

The 'toUpperCase()' method returns a new string with all characters converted to uppercase.

Test: Strings - 1 - Question 9
Save

What is the output of the following code snippet?
String str = "Hello World";
String[] words = str.split(" ");
System.out.println(words.length);
Detailed Solution for Test: Strings - 1 - Question 9

The 'split()' method splits a string into an array of substrings based on the specified delimiter. In this case, the delimiter is a space, so the string is split into two words.

Test: Strings - 1 - Question 10
Save

What is the output of the following code snippet?
String str = "Hello";
StringBuffer sb = new StringBuffer(str);
sb.append(" World");
System.out.println(sb);
Detailed Solution for Test: Strings - 1 - Question 10

The 'append()' method of 'StringBuffer' is used to concatenate the string " World" to the existing string "Hello".

Test: Strings - 1 - Question 11
Save

What is the output of the following code snippet?
String str1 = "Java";
String str2 = new String("Java");
System.out.println(str1 == str2);
Detailed Solution for Test: Strings - 1 - Question 11

The '==' operator compares references for objects. In this case, 'str1' and 'str2' refer to different objects, even though they contain the same value.

Test: Strings - 1 - Question 12
Save

What is the output of the following code snippet?
String str = "Hello";
str.concat(" World");
System.out.println(str);
Detailed Solution for Test: Strings - 1 - Question 12

The 'concat()' method returns a new string with the specified string concatenated, but it does not modify the original string.

Test: Strings - 1 - Question 13
Save

What is the output of the following code snippet?
StringBuffer sb = new StringBuffer("Hello");
sb.reverse();
System.out.println(sb);
Detailed Solution for Test: Strings - 1 - Question 13

The 'reverse()' method of 'StringBuffer' reverses the characters in the string.

Test: Strings - 1 - Question 14
Save

What is the output of the following code snippet?
String str1 = "Hello";
String str2 = "Hello";
System.out.println(str1.equals(str2));
Detailed Solution for Test: Strings - 1 - Question 14

The 'equals()' method of 'String' compares the values of two strings. In this case, 'str1' and 'str2' have the same value.

Test: Strings - 1 - Question 15
Save

What is the output of the following code snippet?
StringBuilder sb = new StringBuilder("Hello");
sb.delete(1, 3);
System.out.println(sb);
Detailed Solution for Test: Strings - 1 - Question 15

The 'delete()' method of 'StringBuilder' removes the characters within the specified range.

60 videos|37 docs|12 tests
Join Course
Information about Test: Strings - 1 Page
In this test you can find the Exam questions for Test: Strings - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Strings - 1, EduRev gives you an ample number of Online tests for practice

Top Courses for Software Development

60 videos|37 docs|12 tests
Join Course
Download as PDF

Top Courses for Software Development

Important Questions for Strings - 1

Find all the important questions for Strings - 1 at EduRev.Get fully prepared for Strings - 1 with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Strings - 1 syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Strings - 1 resources.

Strings - 1 MCQs with Answers

Prepare for the Strings - 1 within the Software Development exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Strings - 1 Basics of Java

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Strings - 1 with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup