This document outlines 22 assignments related to String, StringBuffer, and StringBuilder methods in Java. It includes tasks like generating programs to demonstrate length(), concatenation, character access, comparison, searching, extraction, modification, capacity, and reversal methods. It also assigns generating a simple calculator program using the Math class. The assignments cover a wide range of fundamental string processing and numeric calculation tasks in Java.

1. Assignment
Generate the program for the following String, StringBuffer/Builder methods:
I. Length()
II. Concatenation all ways
III. charAt()
IV. getChars()
V. getBytes()
VI. toCharArray()
VII. Comparison all method ( equals(), equalIgnoreCase, regionMatches(), CompareTo)
VIII. startsWith/endswith()
IX. indexOf()/lastIndexOf()
X. substring()
XI. replace()
XII. trim()
XIII. length(), setLength()
XIV. capacity(), ensureCapacity()
XV. setCharAt()
XVI. getChars()
XVII. append()
XVIII. insert()
XIX. reverse()
XX. delete()/deleteCharAt()
XXI. replace()
Make a simple calculator using Math class