Java Introduction

Question 1

What is the set of commands understood by a computer?

Answer 1

Machine Code

Question 2

What is the component of a computer that executes the commands in a program.

Answer 2

Processor

Question 3

How is information stored in the memory of a computer?

Answer 3

Binary, as 1s and 0s

Question 4

What translates a programming language into machine code that a computer can understand?

Answer 4

A compiler

Question 5

What is bytecode?

Answer 5

The compiler translates the Java program into bytecode, which is then interpreted by the JVM.

Question 6

What is the name of the Java compiler and the java interpreter in Terminal/Command

Answer 6

javac, java

Question 7

How is a Java program executed?

Answer 7

First user writes code in .java file. Then, the compiler (javac) translates this code into Java Bytecode (.class). The Java Virtual machine (java) then executes this program.