Java FilterReader

Java FilterReader is used to perform filtering operation on reader stream. It is an abstract class for reading filtered character streams.

The FilterReader provides default methods that passes all requests to the contained stream. Subclasses of FilterReader should override some of its methods and may also provide additional methods and fields.

Field

Constructors

Method

Example

In this example, we are using "javaFile123.txt" file which contains "India is my country" text in it. Here, we are converting whitespace with question mark '?'.

Output:

 India?is?my?country