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.
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:
[G, e, e, k, s]
[G, e, e, k, s, F, o, r, G, e, e, k, s]