Java, A Beginner's Guide, 5th Edition, 5th Edition

A Second Simple Program

Perhaps no other construct is as important to a programming language as the assignment of a value to a variable. A variable is a named memory location that can be assigned a value. Further, the value of a variable can be changed during the execution of a program. That is, the content of a variable is changeable, not fixed. The following program creates two variables called var1 and var2:

When you run this program, you will see the following output:

This program introduces several new concepts. First, the statement

declares ...