StringBuilder capacity() in Java with Examples
The capacity() method of StringBuilder Class is used to return the current capacity of StringBUilder object. The capacity is the amount of storage available to insert new characters.
Syntax:
public int capacity()
Return Value: This method returns the current capacity of StringBuilder Class.
Below programs demonstrate the capacity() method of StringBuilder Class:
Example 1:
Java
// Java program to demonstrate// the capacity() Method.class GFG { public static void main(String[] args) { // create a StringBuilder object, // default capacity will be 16 StringBuilder str = new StringBuilder(); // get default capacity int capacity = str.capacity(); System.out.println("Default Capacity of StringBuilder = " + capacity); // add the String to StringBuilder Object str.append("Geek"); // get capacity capacity = str.capacity(); // print the result System.out.println("StringBuilder = " + str); System.out.println("Current Capacity of StringBuilder = " + capacity); }} |
Output
Default Capacity of StringBuilder = 16 StringBuilder = Geek Current Capacity of StringBuilder = 16
Example 2:
Java
// Java program to demonstrate// the capacity() Method.class GFG { public static void main(String[] args) { // create a StringBuilder object // with a String passed as parameter StringBuilder str = new StringBuilder("WelcomeGeeks"); // get capacity int capacity = str.capacity(); // print the result System.out.println("StringBuilder = " + str); System.out.println("Capacity of StringBuilder = " + capacity); }} |
Output:
StringBuilder = WelcomeGeeks Capacity of StringBuilder = 28
Reference:
https://docs.oracle.com/javase/10/docs/api/java/lang/StringBuilder.html#capacity()
