How to Declare Variables in Java
To reference a variable in a Java program, you must first declare it. To declare a variable, follow these four steps.
- Open your text editor and create a new file. Type in the following Java statements:
Two variables are declared. The first variable is of type
int. A value is established in a separate Java statement. The second variable is of type
Stringand is declared with an initial value.
- Save your file as DeclareVariablesInJava.java.
- Open a command prompt and navigate to the directory containing your new Java program. Then type in the command to compile your program and hit Enter.
- Now run your Java program. Type in the command to run the Java runtime launcher and hit Enter. Notice the value of your variables in the program's output.