class sup
{
public static void main(String[] args)
{
StringBuffer sb=new StringBuffer();
System.out.println(sb.capacity());//default capacity 16
StringBuffer sb1=new StringBuffer(5);
System.out.println(sb1.capacity());//your provided capacity
StringBuffer sb2=new StringBuffer("freetimelearn");
System.out.println(sb2.capacity());//initial capacity+provided string length 24
System.out.println(sb2.length()); //8
}
}
class sup
{
public static void main(String[] args)
{
StringBuffer s1=new StringBuffer("freetimelearn");
s1.append("hi");//mutability
System.out.println(s1);
}
};