CSIS 110 - Lecture 21
Announcements
Quiz Wednesday. Covers material up through today.
Turn in homework.
Homework
Read sections 5.1 – 5.4 (pages 119 – 136)
Next Programming Assignment on web site – read the assignment, we'll discuss it next
time.
Class String
Last time we started looking at some of the methods in the String class: charAt,
indexOf, lastIndexOf, toUpperCase, and toLowerCase.
Let's look at a few more String methods:
substring( int startPos, int endPos ) – return the String that
consists of the characters in the original String from startPos to endPos – 1.
The new String does NOT contain the character at endPos. An easy way to
remember this: the length of the new String is the difference between endPos and
startPos.
substring( int startPos ) – return the substring of the original String
starting at startPos and continuing to the end of the original String.
trim() – return a new String which has whitespace trimmed off the ends of the
original String. This doesn't remove all whitespace from a String – only at the ends.
