public class buffer
{
	public static void main(String args[])
	{
		StringBuffer str1 = new StringBuffer("Hej");
		StringBuffer str2 = new StringBuffer("smukke");
		System.out.println("str1 = " + str1);
		System.out.println("str2 = " + str2);
		System.out.println();
		str2 = str1;
		System.out.println("str1 = " + str1);
		System.out.println("str2 = " + str2);
		System.out.println();
		str2 = str2.replace(0,str2.length(),"pige");
		System.out.println("str1 = " + str1);
		System.out.println("str2 = " + str2);
	}
}