Syntax error What is the use of StringBuffer class can anyone explain with an example?

What is the use of StringBuffer class can anyone explain with an example?

The java.lang.StringBuffer class is a thread-safe, mutable sequence of characters. Following are the important points about StringBuffer −

  • A string buffer is like a String, but can be modified.

  • It contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls.

  • They are safe for use by multiple threads.

Every string buffer has a capacity.

Example

 Live Demo

import java.lang.*;
public class StringBufferDemo {
   public static void main(String[] args) {
      StringBuffer buff = new StringBuffer("tutorials ");
      System.out.println("buffer = " + buff);
      // appends the string argument to the string buffer
      buff.append("point");
      // print the string buffer after appending
      System.out.println("After append = " + buff);
      buff = new StringBuffer("1234 ");
      System.out.println("buffer = " + buff);
      // appends the string argument to the string buffer
      buff.append("!#$%");
      // print the string buffer after appending
      System.out.println("After append = " + buff);
   }
}

Output

buffer = tutorials
After append = tutorials point
buffer = 1234
After append = 1234 !#$%
Updated on: 2020-06-29T15:02:48+05:30

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