Ques 1 Introduction
JRE Stands for_____?
a) Java Running Engine
b) Java Running Environment
c) Just Runtime Environment
d) Java Runtime Environment
d is the correct option
The Java Runtime Environment (JRE) provides the necessary libraries and JVM to run Java applications.
Ques 2 Introduction
What makes java platform independent?
a) Object Oriented Programming Language
b) It support Multi -threading
c) It is Advanced Programming Language
d) Java uses bytecode of execution
d is the correct option
Java is platform independent because it compiles code into bytecode, which can be executed on any system with a Java Virtual Machine (JVM). This allows Java programs to run on any device or operating system without modification.
Ques 3 Introduction
Which method executes first in Java Programming?
a) first method
b) last method
c) main() method
d) both (b) and (c)
c is the correct option
The main() method is the entry point of any Java program. When a Java application is executed, the JVM calls the main() method first to start the program.
Ques 4 Introduction
Which environment variable is used to set the path in Java?
a) path
b) JAVA_PATH
c) JAVA_HOME
d) HOME
c is the correct option
The JAVA_HOME environment variable is used to specify the directory where the JDK is installed. It helps in setting the path for Java-related tools and libraries.