Java 6 Illuminated: An Active Learning Approach, 2nd Edition

11.7 Reading and Writing Objects to a File 783

Grade: 95

Letter grade: A

Current GPA: 3.68

Successful student: true

Figure 11.23

Contents of the grade.txt

File

After this program is executed, the file grade.txt will contain the data shown

in Figure 11.23.

11.7 Reading and Writing Objects to a File

Throughout this book, we have emphasized the benefits of object-oriented

programming. Just as we can write text and primitive data types to a file

and subsequently read them from the file, we can also write objects to a file

and subsequently read them as objects. This is convenient for two reasons:

■

We can write these objects directly to a file without having to ...