please clarify regarding capacity method of my below string buffer class example

Home Answers Viewqa Java-Beginners please clarify regarding capacity method of my below string buffer class example

N.SENDIL KUMAR

please clarify regarding capacity method of my below string buffer class example
0 Answer(s) 2 years and a month ago
Posted in : Java Beginners

hi

here is the program below:

> import java.lang.*; public class
> Compare{ public static void
> main(String[] args) {
> System.out.println("StringBuffer
> insert and append example!");
> StringBuffer sb = new StringBuffer(0);
> //First position
> System.out.println(sb.insert(0,
> "vinoda")); int len = sb.length();
> System.out.println("length
> is"+sb.length());
> System.out.println("capacity
> is"+sb.capacity()); //last position
> System.out.println(sb.insert(len,
> "Deepak"));
> System.out.println("capacity
> is"+sb.capacity()); //Six position
> System.out.println(sb.insert(6,
> "Raj")); System.out.println("length
> is"+sb.length());
> System.out.println("capacity
> is"+sb.capacity()); //Always last
> System.out.println(sb.append("Mohit"));
> System.out.println(sb.append("raju"));
> System.out.println("length
> is"+sb.length());
> System.out.println("capacity
> is"+sb.capacity()); } }

o/p:

StringBuffer insert and append example!
vinoda
length is6
capacity is6
vinodaDeepak
capacity is14
vinodaRajDeepak
length is15
capacity is30
vinodaRajDeepakMohit
vinodaRajDeepakMohitraju
length is24
capacity is30

my question is how the capacity of s.buffer changed from 6 to 14 and to 30 and why it remained in 30 for the last operation.
thanks in advance

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