Java Interview Guide : 200+ Interview Questions and Answers - Java Popularity and Platform Independence

The video tutorial explores why Java is a popular programming language, highlighting its platform independence and object-oriented nature. Java's platform independence is achieved through the use of bytecode and the Java Virtual Machine (JVM), which allows Java programs to run on any operating system. The JVM converts bytecode into executable instructions specific to each operating system, ensuring Java's 'build once, run anywhere' capability.

What is bytecode in the context of Java?

Describe how the JVM converts bytecode to executable instructions.

Why is it said that Java can be built once and run anywhere?