The append(CharSequence, int, int) method of StringWriter Class in Java is used to append a specified portion of the specified charSequence on the writer. This charSequence is taken as a parameter. The starting index and ending index to be written are also taken as parameters.
Syntax:
public void append(CharSequence charSequence, int startingIndex, int endingIndex)
Parameters: This method accepts three mandatory parameters:
- charSequence which is the charSequence to be written in the Stream.
- startingIndex which is the starting index from which the portion of character is to taken.
- endingIndex which is the ending index to be written on the writer.
Return Value: This method does not returns any value.
Below programs illustrates the working of append(CharSequence, int, int) method:
Program 1:
// Java program to demonstrate// StringWriter append(CharSequence, int, int) method  import java.io.*;  class GFG {    public static void main(String[] args)    {          try {              // Create a StringWriter instance            StringWriter writer                = new StringWriter();              // Get the charSequence            // to be written in the writer            CharSequence charSequence = "GeeksForGeeks";              // Get the starting index            int startingIndex = 0;              // Get the length of char            int endingIndex = 5;              // Write the portion of the charSequence            // to this writer using append() method            // This will put the charSequence in the writer            // till it is printed on the console            writer.append(charSequence,                          startingIndex,                          endingIndex);              System.out.println(writer.toString());        }        catch (Exception e) {            System.out.println(e);        }    }} |
Output:
Geeks
Program 2:
// Java program to demonstrate// StringWriter append(CharSequence, int, int) method  import java.io.*;  class GFG {    public static void main(String[] args)    {          try {              // Create a StringWriter instance            StringWriter writer                = new StringWriter();              // Get the charSequence            // to be written in the writer            CharSequence charSequence = "GFG";              // Get the starting index            int startingIndex = 2;              // Get the length of char            int endingIndex = 3;              // Write the portion of the charSequence            // to this writer using append() method            // This will put the charSequence in the writer            // till it is printed on the console            writer.append(charSequence,                          startingIndex,                          endingIndex);              System.out.println(writer.toString());        }        catch (Exception e) {            System.out.println(e);        }    }} |
Output:
G
