A reference to an existing object in Java can be created simply by equating a variable to the object. To create a reference to an object in Java, follow these four steps.
- Open your text editor and create a new file. Type in the following Java statements:
- Save your file as CreateReferenceToAnObjectInJava.java.
- Open a command prompt and navigate to the directory containing your new Java programs. Then type in the command to compile your Java source and hit Enter.
- You are ready to test your Java program. Type in the command to run the Java runtime launcher and hit Enter. Observe that the second line of output displays the same object data as the first line, confirming that your new reference is working correctly.
After the object is created, the object data is displayed. The object data is displayed again with the reference your program has created. The data shown on the output when you run your program should be the same.