Question 1

Which keyword is used to create a class in Java?

Accepted Answer

class. The 'class' keyword defines a class in Java. 'struct' is from C/C++; Java uses 'class' for all object blueprints.

Question 2

What does JVM stand for?

Accepted Answer

Java Virtual Machine. JVM (Java Virtual Machine) is the runtime environment that executes Java bytecode, making Java platform-independent ('Write once, run anywhere').

Question 3

Which of the following is NOT a primitive data type in Java?

Accepted Answer

String. String is a class (reference type), not a primitive. Java's 8 primitives are: byte, short, int, long, float, double, char, and boolean.

Question 4

What is the correct syntax to print output to the console in Java?

Accepted Answer

System.out.println("Hello"). System.out.println() is the standard way to print to the console in Java. The others belong to Python, shell, and JavaScript respectively.

Question 5

What is the default value of an int field in a Java class?

Accepted Answer

0. In Java, int fields default to 0. Only object references default to null. Numeric primitives default to zero-equivalent values.

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