StringBuffer ()

public StringBuffer()

Constructs a string buffer with initial capacity of 16characters in it. Initially there are no characters in it.

class StringBufferConstructor1{
 public static void main(String args[]){
  StringBuffer str = new StringBuffer();
  
  System.out.println("str = " + str);
  System.out.println("Initial Capacity is " + str.capacity());
 }
}

Output

str =
Initial Capacity is 16

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