CharArrayReader implements a character buffer that can be used as a character-input stream.
When to use it?
CharArrayReader is handy when you have data in a char array, but need to pass that data to some component which can only read from a Reader. Simply wrap the char array in a CharArrayReader and pass it to that component.
Constructors
Methods
package com.java.io;
import java.io.CharArrayReader;
import java.io.IOException;
public class CharArrayReaderExample {
public static void main(String[] args) {
CharArrayReader charReader = null;
String str = "Reading CharArray Data";
char[] chars = str.toCharArray();
int totalChars = str.length();
try {
charReader = new CharArrayReader(chars);
// Check if markSupported by CharArrayReader
System.out.println("Is Mark Supported:" + charReader.markSupported());
if (charReader.markSupported()) {
// marks the current position
// 100 characters to be read before the mark position becomes invalid
charReader.mark(100);
}
// Skip 5 characters
charReader.skip(5);
System.out.print("After Skip Content:");
// Checks if the CharArrayReader is ready to be read
if (charReader.ready()) {
for (int i = 0; i < totalChars - 5; i++) {
// Reading one character at a time
System.out.print((char) charReader.read());
}
}
System.out.println("");
// Reset to the earlier marked position
System.out.println("Reset to the earlier marked position");
charReader.reset();
System.out.print("Reading characters into char Array:");
char c[] = new char[totalChars];
if (charReader.ready()) {
charReader.read(c);
for (int i = 0; i < totalChars; i++) {
System.out.print(c[i]);
}
}
} catch (IOException ex) {
ex.printStackTrace();
} finally {
// Closing the streams
if (charReader != null)
charReader.close();
}
}
}Is Mark Supported:true
After Skip Content:ng CharArray Data
Reset to the earlier marked position
Reading characters into char Array:Reading CharArray Data