CPS 1 - Spring, 1999 - Ramm 1/27/99 #6

Chapt 1. An Introduction to Programming: Coding Decision Trees

Using Primitive Data Types: Integers
- Other primitive types include: boolean, char, float
Example Using Integers.
Count.java, count.html
Example Doing Multiple Tallies
Tallies.java, tallies.html
Used Integers and Plus Operator
- All five integer operators:
  +, -, *, /, %
  
  Operator Precedence

The String Class

Declaration:
String message;
String Constant
"Good Morning World!"
String Assignment
message = "It's Friday";
String Has Many Methods for Manipulation
- Most important ones are: length(), indexOf(), substring()
int length()
int indexOf(String st)
String substring(int start, int end)
Getting String Data from the User
- Can use:
  
  message = mg.getText();
  where mg is a TextField and message is a String.
Exchanging the Contents of Two Variables
Example Doing Some String Manipulation
StringPlay.java, StringPlay.html
Add More Functions
- All Capitals ( String toUpperCase())