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  1.  
  2. class Ideone
  3. {
  4. 	public static void main (String[] args) 
  5. 	{
  6. 		StringBuilder sb = new StringBuilder();
  7. 		sb.append("Ishika"); // adds a string at the end //Ishika
  8. 		sb.insert(2, "ach"); // adds a string or character at an index //Isachhika
  9.  
  10. 		System.out.println(sb);
  11. 		sb.delete(2,5); // deletes the substring from [start idx, end idx) // Ishika
  12. 		sb.deleteCharAt(4); // deletes the char present at given idx // Ishia
  13. 		System.out.println(sb);
  14. 		sb.replace(4, 5, "ka"); // Ishika
  15. 		System.out.println(sb);
  16. 		sb.reverse(); // reverses the string // akihsI
  17. 		sb.setCharAt(2, 'a'); // changes the char at given index // akahsI
  18. 		System.out.println(sb);
  19.  
  20. 		System.out.println(sb.charAt(4));
  21. 		System.out.println(sb.length());
  22. 		System.out.println(sb.capacity());
  23. 		sb.ensureCapacity(50);
  24. 		System.out.println(sb.capacity()); // 50
  25.  
  26. 		sb.delete(0,sb.length()+1);
  27. 		sb.append("Ishika Jain Hemant Jindal");
  28. 		System.out.println(sb);
  29. 		System.out.println(sb.capacity()); // 50
  30. 		sb.trimToSize();
  31. 		System.out.println(sb.capacity()); // 25
  32. 	}
  33. }
Success #stdin #stdout 0.07s 52460KB
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Isachhika
Ishia
Ishika
akahsI
s
6
16
50
Ishika Jain Hemant Jindal
50
25
https://ideone.com/SIhT0y
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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