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Mcq in java

This section includes collections of multiple choice objective questions on fundamental and overview of Java language, Java tokens, keywords, identifiers, literals and operators, constants, variables and data types in Java, Operators and expressions, Control structure in Java, decision making and looping, definition of classes, objects and methods. Skip to Main Content. Fundamental of Java This section includes collections of multiple choice objective questions on fundamental and overview of Java language, Java tokens, keywords, identifiers, literals and operators, constants, variables and data types in Java, Operators and expressions, Control structure in Java, decision making and looping, definition of classes, objects and methods.

This section includes collections of multiple choice objective questions on different types of arrays like one dimensional arrays and two dimensional arrays, declaring the array, creating memory location, most commonly used string methods in Java, vector class and wrapper classes.

This section includes the collections of multiple choice questions on implementing inheritance in java, defining packages and interfaces. It also includes about creating package, adding more classes to a package and accessing the contents of a package.

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It also includes objective questions on definition of applets, the applet class, uses of applets in HTML, life cycle of an applet and the graphics class in Java Applet. This section includes objective questions on Exception Handling in Java includes MCQ questions on compile time and run-time errors occurred in java programming. It includes the collections of objective questions from definition of exception, exception classes, common java exceptions, different exception handling keywords such as try, catch and finally.Here Coding compiler sharing a list of 60 core java and advanced java multiple choice questions and answers for freshers and experienced.

These java multiple choice interview questions asked in various java interview exams. All the best for your future and happy java learning. After the above piece of code is executed, what are the colors of r1 and r2 in this order? The method setValue assigns the value of i to the instance field value. What could you write for the implementation of setValue?

mcq in java

Java Multiple Choice Questions 23 You read the following statement in a Java program that compiles and executes. Java Multiple Choice Questions 24 The java run time system automatically calls this method while garbage collection.

Java Multiple Choice Questions 29 All exception types are subclasses of the built-in class. Java Multiple Choice Questions 30 When an overridden method is called from within a subclass, it will always refer to the version of that method defined by the.

Java Multiple Choice Questions 31 Mark the incorrect statement from the following:. Java Multiple Choice Questions 34 Identify, from among the following, the incorrect variable name s.

Java Multiple Choice Questions 35 Use the following declaration and initialization to evaluate the Java expressions. Java Multiple Choice Questions 36 Use the following declaration and initialization to evaluate the Java expressions.

Java Multiple Choice Questions 37 Use the following declaration and initialization to evaluate the Java expressions.

MCQ Questions On Control Flow Statements In Java

Java Multiple Choice Questions 38 Use the following declaration and initialization to evaluate the Java expressions. Members of a class specified as ………………. Packages provide a visibility control mechanism. One of the important properties of a package is that all classes defined inside a package is accessible by code outside that package. Which of them is correct? A class can be declared as both abstract and final.

A class declared as final can be extended by defining a sub-class.

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Resolving calls to methods dynamically at run-time is called late binding. The class Object defined by Java need not be a super class of all other classes. All white-space characters blanks are ignored by the compiler. Java keywords can be used as variable names.Explanation: The output of the Java compiler is bytecode, which leads to the security and portability of the Java code.

It is a highly developed set of instructions that are designed to be executed by the Java runtime system known as Java Virtual Machine JVM. The Java programs executed by the JVM that makes the code portable and secure. Because JVM prevents the code from generating its side effects.

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The Java code is portable, as the same byte code can run on any platform. Explanation: The Java language does not support pointers; some of the major reasons are listed below:.

mcq in java

Explanation: In the above code, there are two values of variable a, i. Similarly, there are two values of variable b, i. But in the output, the values of a and b are 60 and 30, respectively. It is because of the execution order of the program. The execution order of the program is that the static block executes first, then instance block, and then constructor. Hence, the JVM will consider the value of a and b as 60 and 30 concerning the execution order.

And the value of variables c and m is 0 as we have not assigned any value to them. Explanation: In Java, Unicode characters can be used in string literals, comments, and commands, and are expressed by Unicode Escape Sequences.

A Unicode escape sequence is made up of the following articles:. The char literals are always declared in single quotes '. Explanation: In Java, the return type of hashCode method is an integer, as it returns a hash code value for the object.

mcq in java

Explanation: For every long literal to be recognized by Java, we need to add L character at the end of the expression. It can be either uppercase L or lowercase l character. However, it is recommended to use uppercase character instead of lowercase because the lowercase l character is hard to distinguish from the uppercase i character.

Explanation: In Java, whenever we divide any number double, float, and long except integer by zero, it results in infinity.Here Coding compiler sharing a list of 40 Java Objective Questions and Answers for freshers and experienced Java developers. All the best for your future and happy Java learning. This is an example of:. Extending two or more classes. Extending one class and implementing one or more interfaces.

Implementing two or more interfaces.

MCQ Questions On Control Flow Statements In Java

Which one of the following is used to enforce such restriction? Core Java Multiple Choice Questions 21 What is the fundamental unit of information of writer streams? Core Java Multiple Choice Questions 25 What is the sequence of major events in the life of an applet? Core Java Multiple Choice Questions 30 Which of the following statements are true regarding the finalize method? Core Java Multiple Choice Questions 32 Given a class named Book, which one of these is a valid constructor declaration for the class?

Core Java Multiple Choice Questions 33 What will be the result of attempting to compile the following program? Core Java Multiple Choice Questions 34 Given the following class, which of these is valid way of referring to the class from outside of the package net. Base c By simply referring to the class as net. Base d By simply referring to the class as net. Base e By importing with net.

Core Java Multiple Choice Questions 35 Which one of the following class definitions is a valid definition of a class that cannot be instantiated? They are only accessible within the block in which they are declared c Subclasses of a class must reside in the same package as the class they extend d Local variables can be declared static e None of the above. Sign in. Log into your account.In this Java Questions and Answers section you can learn and practice Java Questions and Answers to improve your skills in order to face technical inerview conducted by organisations.

By Practicing these interview questions, you can easily crack any Exams interview. Fully solved examples with detailed answer description. You no need to worry, we have given lots of Java Questions and Answers and also we have provided lots of FAQ's to quickly answer the questions in the Competitive Exams interview.

Which of the following can be operands of arithmetic operators? Decrement operator, —, decreases value of variable by what number?

Which of these statements are incorrect? Applets Questions and Answers 1. Which of these functions is called to display the output of an applet?

mcq in java

Which of these modifiers can be used for a variable so that it can be accessed from any thread or parts of a program? Which of these keywords must be used to handle the exception thrown by try block in some rational manner?

Which of the following is method of wrapper Float for converting the value of an object into byte? Which of these class can generate an array which can increase and decrease in size automatically?

Which of this access specifies can be used for a class so that its members can be accessed by a different class in the same package? Which of these is a method of ObjectOutput interface used to finalize the output state so that any buffers are cleared?

Core Java - Java (MCQ) questions and answers

Which of these method of class String is used to extract a single character from a String object? Which of these method can be used to make the main thread to be executed last among all the threads? Why Java Questions and Answers Required? Where can I get Java Questions and Answers?

How to solve these Java Questions and Answers? What is the range of data type short in Java? What is the range of data type byte in Java? An expression involving byte, int, and literal numbers is promoted to which of these? Which of these literals can be contained in a data type float variable?

Which data type value is returned by all transcendental math functions? Applets Questions and Answers 2. Which of these methods can be used to output a sting in an applet? Applets Questions and Answers 3. What does AWT stands for? Applets Questions and Answers 4.

Applets Questions and Answers 5. Arrays Questions and Answers 1. Which of these operators is used to allocate memory to array variable in Java? Arrays Questions and Answers 2. Which of these is an incorrect array declaration? Arrays Questions and Answers 3. What will this code print?

Which of these is an incorrect Statement?A if-else B switch C if D while. State whether the following statements about switch statement are correct. The conditional statement, ……………….

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A if, switch B switch, if C while, if D if, while. A break B pause C start D continue. State whether the following statements about switch statement are True or False. State whether the following statements about conditional statements are True or False.

Which of the following control expressions are valid for an if statement? By using ……………………. A switch B break C continue D default. The ………………………. A while B do-while C for D switch. If you need to select among a large group of values, a switch statement will run much faster than the equivalent logic coded using ………………. A if B if-else C do-while D while. The ……………….

The ……………………… statement at the end of each block signals the end of a particular case and causes an exit from the switch statement, transferring the control to the statement following the switch. The ………………… statement tests the value of a given variable against a list of case values and when a match is found, a block of statements associated with that case is executed.

State whether the following statements for if statement are True or False. Java Multiple Choice Question MCQ 0 Shuseel Baral Shuseel Baral is a web programmer and the founder of InfoTechSite has over 8 years of experience in software development, internet, SEO, blogging and marketing digital products and services is passionate about exceeding your expectations.

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Skip to Main Content. This set of multiple choice question includes objective questions on control flow statements which are used to control the flow of execution in a program. It includes MCQ question from decision making statements like if-else and switch statements, looping statements like for loop, while loop and do-while loop along with other statements like break, continue and label statements. B switch 2.

C True, True 3.Based on various important concepts of Java Programming, these objective type questions include a lot of code based examples for Java developers and Java programmers preparing for various online tests. Preparing Java questions for Placement Tests 1. Read the most important Java concepts here. Clear any quiz, job interview, placement test or competitive exam on Java.

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