Explanation: Java programming was developed by James Gosling at Sun Microsystems in 1995.
Which component is used to compile, debug and execute the java programs?
Explanation: JDK is a core component of Java Environment and provides all the tools, executables and binaries required to compile, debug and execute a Java Program.
Which one of the following is not a Java feature?
Explanation: Pointers is not a Java feature
What is the extension of java code files?
Explanation: Java files have .java extension.
Which of the following is not an OOPS concept in Java?
Explanation: There are 4 OOPS concepts in Java. Inheritance, Encapsulation, Polymorphism and Abstraction.
What is not the use of “this” keyword in Java?
Explanation: “this” is an important keyword in java. It helps to distinguish between local variable and variables passed in the method as parameters.
Which of the following is a type of polymorphism in Java Programming?
Explanation: There are two types of polymorphism in Java. Compile time polymorphism (overloading) and runtime polymorphism (overriding).
Which of these are selection statements in Java?
Explanation: Continue and break are jump statements, and for and while is a looping statement.
Which of these keywords is used to define interfaces in Java?
Explanation: interface keyword is used to define interfaces in Java.
Which of the following is a superclass of every class in Java?
Explanation: Object class is superclass of every class in Java.
Which of these keywords are used for the block to be examined for exceptions?
Explanation: try is used for the block that needs to checked for exception.
Which one of the following is not an access modifier?
Explanation: Public, private, protected and default are the access modifiers.
What is the numerical range of a char data type in Java?
Explanation: Char occupies 16-bit in memory, so it supports 216 i:e from 0 to 65535.
Which of the following is true about servlets?
Explanation: Servlets execute within the address space of a web server. Since it is written in java it is platform independent.
A class member declared protected becomes a member of subclass of which type?
Explanation: A class member declared protected becomes a private member of subclass.
What is not type of inheritance?
Explanation: Inheritance is way of acquiring attributes and methods of parent class. Java supports hierarchical inheritance directly.
Which of these operators can be used to concatenate two or more String objects?
Explanation: Operator + is used to concatenate strings
Which of this method of class String is used to obtain a length of String object?
Explanation: Method length() of string class is used to get the length of the object which invoked method length().
Which of these methods can be used to convert all characters in a String into a character array?
Explanation: charAt() return one character only not array of character.
Which of these classes is not included in java.lang?
Explanation: Array class is a member of java.util.
What is JVM?
Explanation: JVM is Interpreter.
Java is case sensitive?
Explanation: Java is case sensitive, which means identifier Hello and hello would have different meaning in Java.
How to run java program in command prompt?
Explanation: type java filename to run your program.
Which of the following exceptions is thrown by every method of Runtime class?
Explanation: Every method of Runtime class throws SecurityException.
Which of these is a process of writing the state of an object to a byte stream?
Explanation: Serialization is the process of writing the state of an object to a byte stream.
Microsoft Office
Computer Introduction
Operating System Introduction
MS Office Tools and its uses
MS Word
MS Excel
MS Powerpoint
Double Entry System of Accounting
Types of Accounts
The Golden Rules of Accounting
Source Documents for Accounting
Recording of Business Transactions
The Accounting Equation
Recording of Transactions in Books of Original Entry/Journal
