PushbackReader read(char, int, int) method in Java with Examples Last Updated : 11 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The read(char[], int, int) method of PushbackReader 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. Syntax: public int read(char[] charArray, int offset, int length) Parameters: This method accepts three mandatory parameters: charArray which is the character array to be written in the Stream. offset which is the offset index at which the characters are to be written in the array. length which is the number of characters to be written in the array. 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 following exceptions: IOException: if some error occurs while input output. IndexOutOfBoundsException: if the offset value is not within the range of character array Below methods illustrates the working of read(char[], int, int) method: Program 1: Java // Java program to demonstrate // PushbackReader read(char, int, int) method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { // Initializing a StringReader // and PushbackReader String s = "GeeksForGeeks"; StringReader stringReader = new StringReader(s); PushbackReader pushbackReader = new PushbackReader(stringReader); // Get the character array // to be read from the stream char[] charArray = new char[5]; // Get the offset index int offset = 0; // Get the length int length = 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 pushbackReader .read(charArray, offset, length); // Print the read charArray System.out.println( Arrays.toString(charArray)); // Close the stream pushbackReader.close(); System.out.println("Stream Closed."); } catch (Exception e) { System.out.println(e); } } } Output: [G, e, e, k, s] Stream Closed. Program 2: Java // Java program to demonstrate // PushbackReader read(char, int, int) method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { // Initializing a StringReader // and PushbackReader String s = "GFG"; StringReader stringReader = new StringReader(s); PushbackReader pushbackReader = new PushbackReader(stringReader); // Get the character array // to be read from the stream char[] charArray = new char[5]; // Get the offset index int offset = 0; // Get the length int length = 2; // Read the charArray // to this reader using read() method // This will put the str in the stream // till it is read by the reader pushbackReader .read(charArray, offset, length); // Print the read charArray System.out.println( Arrays.toString(charArray)); // Close the stream pushbackReader.close(); System.out.println("Stream Closed."); } catch (Exception e) { System.out.println(e); } } } Output: [G, F,,, ] Stream Closed. Reference: https://docs.oracle.com/javase/9/docs/api/java/io/PushbackReader.html#read-char:A-int-int- Comment More infoAdvertise with us Next Article Reader read(char[], int, int) method in Java with Examples S srinam Follow Improve Article Tags : Java Java-Functions Java-IO package Java-PushbackReader Practice Tags : Java Similar Reads 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 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 PushbackReader read() method in Java with Examples The read() method of PushbackReader 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. Syntax: public int read() Parameters: T 3 min read PushbackReader read() method in Java with Examples The read() method of PushbackReader 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. Syntax: public int read() Parameters: T 3 min read PushbackReader ready() method in Java with Examples The ready() method of PushbackReader Class in Java is used to check whether this PushbackReader is ready to be read or not. It returns a boolean which states if the reader is ready. Syntax: public void ready() Parameters: This method does not accepts any parameters Return Value: This method returns 2 min read PushbackReader ready() method in Java with Examples The ready() method of PushbackReader Class in Java is used to check whether this PushbackReader is ready to be read or not. It returns a boolean which states if the reader is ready. Syntax: public void ready() Parameters: This method does not accepts any parameters Return Value: This method returns 2 min read Like