Java StringBuffer replace substring

Introduction

To replace substring in a StringBuffer object, use replace().

Its signature is shown here: 

StringBuffer replace(int startIndex, int endIndex, String str)

The following program demonstrates replace(): 

// Demonstrate replace()
public class Main {
  public static void main(String args[]) {
    StringBuffer sb = new StringBuffer("This is a test.");

    sb.replace(5, 7, "was");
    System.out.println("After replace: " + sb);
  }//ww w .j  av a 2  s.  c  o m
}



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