Reading and writing Files

Reading and writing Files  Java provides a number of classes and methods that allow you to read and write files, In Java, all files are byte-oriented, and Java provides methods to read and write bytes from and to a file. However, Java allows you to wrap a...

The Print Writer Class

The Print Writer Class  Although using System.out to write to the console is still permissible under Java, its use is recommended mostly for debugging purposes or for sample programs, such as those found in this book . For real-world programs, the recommended method...

Writing of sole Output

Writing of sole Output  Console output is most easily accomplished with print( ) and print in( ), described earlier, which are used in most of the examples in this book. These methods are defined by the class Print Stream (which is the type of the object referenced by...

Reading Strings

Reading Strings To read a string from the keyboard, use the version of read Line( ) that is a member of the Buffered Spreader. Its general form is shown here: String read Line ( ) throws IO Exception As you can see, it returns a String object. The following program...

Reading Console Input

Reading Console Input In Java 1.9;the only way to perform ‘console input to use a byte stream, and older code that uses this approach persists. Today, using a yet stream to read console input· is still technically possible, but doing ad may require the use of a...

The Predefined Streams

The Predefined Streams As you know, all Java programs automatically import the java.lang package. This package defines a class called System, which encapsulates several aspects of the run-time environment. For example, using some of its methods, you can obtain...