Practice programming and information technology MCQs covering coding, software development, databases, networking, and computer applications.
What is Java Programming? java programming mcq questions and answers pdf free download. Java is a programming language and a platform. Java is a high level, robust, object-oriented and secure programming language. Java was developed by Sun Micro systems (which is now the subsidiary of Oracle) in the year 1995. James Gosling is known as […]
01. Which of the following option leads to the portability and security of Java? A. Bytecode is executed by JVM B. The applet makes the Java code secure and portable C. Use of exception handling D. Dynamic binding between objects Answer Option : A 02. Which of the following is not a Java features? A.
11. Which of the following creates a List of 3 visible items and multiple selections abled? A. new List(false, 3) B. new List(3, true) C. new List(true, 3) D. new List(3, false) Answer Option : B 12. Which of the following for loop declaration is not valid? A. for ( int i = 99; i
21. What do you mean by chained exceptions in Java? A. Exceptions occurred by the VirtualMachineError B. An exception caused by other exceptions C. Exceptions occur in chains with discarding the debugging information D. None of the above Answer Option : B 22. In which memory a String is stored, when we create a string
31. Which of the following is a valid syntax to synchronize the HashMap? A. Map m = hashMap.synchronizeMap(); B. HashMap map =hashMap.synchronizeMap(); C. Map m1 = Collections.synchronizedMap(hashMap); D. Map m2 = Collection.synchronizeMap(hashMap); Answer Option : C 32. Which of the following is a mutable class in java? A. java.lang.String B. java.lang.Byte C. java.lang.Short D. java.lang.StringBuilder
41. What is the default encoding for an OutputStreamWriter? A. UTF-8 B. Default encoding of the host platform C. UTF-12 D. None of the above Answer Option : B 42. What are the Type Conversions available in Java language? A. Narrowing Type Conversion B. Widening Type Conversion C. A and B D. None of the
51. A boolean literal in Java can be type casted to which data type? A. byte B. short C. int D. None of the above Answer Option : 4 52. If a variable or operand in an expression is type long, then all the operands are type promoted to which data type? A. int B.
61. What is the other name for Relational Operators in Java? A. Comparison operators B. Conditional operators C. A and B D. None of the above Answer Option : C 62. How many minimum number of operands are required to use Comparison operators in Java? A. 1 B. 2 C. 3 D. 4 Answer Option
71. Which is the Logical operator in Java that works with a Single Operand? A. Logical AND B. Logical OR C. Logical Exclusive OR D. Logical NOT Answer Option : D 72. Which among the following is a Logical Unary NOT operator in Java? A. ~ B. ! C. # D. ^ Answer Option :
81. Which is fast among OR(|) and Short Circuit OR (||) operators in Java? A. OR Operator B. Short Circuit OR operator C. Both work at the same speed D. None of the above Answer Option : B 82. Why are Short Circuit AND (&&) and Short Circuit OR (||) operators are fast in Java?
91. What is the other name for a Question Mark – Colon (?:) operator in Java? A. Special Relational operator B. Special Logical Operator C. Ternary Operator D. None Answer Option : C 92. Java Ternary operator is sometimes called ____. A. Relational Operator B. Conditional Operator C. Logical Operator D. None Answer Option :
