COMP 202 Lecture Notes - Lecture 8: Boolean Expression, While Loop

• School: McGill University
• Department: Computer Science (Sci)
• Course: COMP 202
• Professor: Daniel Kirshbaum

Document Summary

Comp202 lecture 8 strings and while loops. String: a sequence of characters eg. hello world . A string is a class, and a specific string is an object. We can"t use the same operators on strings as we use with primitive data types. Instead, there is a set of methods provided to manipulate strings. The documentation for strings can be found here: https://docs. oracle. com/javase/7/docs/api/java/lang/string. html. You can compare strings using the following. Note: equals is case sensitive. Use equalsignorecase if you don"t want to distinguish between upper and lower case. How can this be applied? a = false. = true (as equalsignorecase doesn"t worry about the case of the letter, so course and course2 are the same) A simple calculator program employing . equals: This is the same as int x = 2; x = x+5; x=x+1; This block of code is repeatedly executed, as the long as the condition remains true. Iteration: a single execution of the code inside the while loop.