Reader read(char[]) method in Java with Examples Last Updated : 22 Jun, 2022 Summarize Comments Improve Suggest changes Share Like Article Like Report The read(char[]) method of Reader Class in Java is used to read the specified characters into an array. This method blocks the stream till: It has taken some input from the stream.Some IOException has occurredIt has reached the end of the stream while reading. Syntax: public int read(char[] charArray) Parameters: This method accepts a mandatory parameter charArray which is the character array to be written in the Stream. Return Value: This method returns an integer value which is the number of characters read from the stream. It returns -1 if no character has been read. Exception: This method throws IOException if some error occurs while input-output. Below methods illustrates the working of read(char[]) method: Program 1: Java // Java program to demonstrate // Reader read(char[]) method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { String str = " GeeksForGeeks& quot; ; // Create a Reader instance Reader reader = new StringReader(str); // Get the character array // to be read from the stream char[] charArray = new char[5]; // Read the charArray // to this reader using read() method // This will put the str in the stream // till it is read by the reader reader.read(charArray); // Print the read charArray System.out.println(Arrays.toString(charArray)); reader.close(); } catch (Exception e) { System.out.println(e); } } } Output:[G, e, e, k, s] Program 2: Java // Java program to demonstrate // Reader read(char[]) method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { String str = "GeeksForGeeks"; // Create a Reader instance Reader reader = new StringReader(str); // Get the character array // to be read from the stream char[] charArray = new char[str.length()]; // Read the charArray // to this reader using read() method // This will put the str in the stream // till it is read by the reader reader.read(charArray); // Print the read charArray System.out.println( Arrays .toString(charArray)); reader.close(); } catch (Exception e) { System.out.println(e); } } } Output:[G, e, e, k, s, F, o, r, G, e, e, k, s] Program 3: Java // Use a BufferedReader to read characters from the console. import java.io.*; public class GFG { public static void main(String args[]) throws IOException { char c; BufferedReader br = new BufferedReader( new InputStreamReader(System.in)); System.out.println( "Enter the characters: , 'q' to quit."); // read characters do { c = (char)br.read(); System.out.println(c); } while (c != 'q'); } } Output: gfgisbest g f g i s b e s t q Comment More infoAdvertise with us Next Article Reader read(char[]) method in Java with Examples C code_r Follow Improve Article Tags : Java Java-Functions Java-IO package Java-Reader Practice Tags : Java Similar Reads StringReader read(char[]) method in Java with Examples The read(char[]) method of StringReader Class in Java is used to read the specified characters into an array. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading. Syntax: public int read(char[] 2 min read Reader read(CharBuffer) method in Java with Examples The read(CharBuffer) method of Reader Class in Java is used to read the specified characters into a CharBuffer instance. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading. Syntax: public int r 2 min read Reader read() method in Java with Examples The read() method of Reader Class in Java is used to read a single character from the stream. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading. This method is declared as abstract method. It 3 min read Reader read(char[], int, int) method in Java with Examples The read(char[], int, int) method of Reader Class in Java is used to read the specified length characters into an array at a specified offset. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading 3 min read StringReader read(CharBuffer) method in Java with Examples The read(CharBuffer) method of StringReader Class in Java is used to read the specified characters into a CharBuffer instance. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading. Syntax: public 2 min read Like