Download Lesson 11 use existing subprograms File

LESSON 10 ALGORITHMS WITH NEST ED STRUCTURES
Course:
ICS3U
Lesson #:
11
Unit: 1
Time (minutes):
3 hours
Curriculum expectations:
A3.1 demonstrate the ability to use existing subprograms (e.g., random number
generator, substring, absolute value) within computer programs;
Lecture Notes:
Java Class Library
The Java Class Library (JCL) is a set of dynamically loadable libraries
that Java applications can call at run time. Almost all of JCL is stored
in a single Java archive file called "rt.jar", which is provided with JRE
and JDK distributions.
If we want to know functions of a library class, we need to read java
API(Application Programming Interfaces).
How to use String class?
Step 1, Go to google to search Java API
Step 2. Click Java 8 API and find String class
Step 3, Find method to convert any string to uppercase.
Step 4. Write a java program(ConverMe.java) to conver any input
string to Uppercase
public class ConvertMe {
public static void main(String[] args){
String s=args[0];
System.out.println(s.toUpperCase());
}
}
Note: How to use a class in general
Step 1, Create a object using class
For example:
String s=new String(“I love computer programming”);
S is an object. It is an instance of String class.
Step 2, Call a method to do what you want to do
String s1=s.toUpperCase();
toUpperCase() is a method of String class.
Teaching Strategies:
*
Class Activity (teacher
facilitation)
Direct Instruction (discussion
possible)
*
Experiential learning (learn by
doing)
Class Discussion (teacher
facilitated)
*
Direct Instruction (teacher-led)
*
Worksheets/Surveys
Small Group Discussion
Individual or Group Research
Partner Discussion/Conferencing
Teacher Modeling
1:1 Conferencing Teacher &
Student.
Text-based modeling
Teacher reading to class
Use of Computers / Internet
Silent individual reading
Use of video tape or audio
materials
Group based reading
Role Playing
Independent Work (teacher
facilitation)
Presentations.
Group Work (teacher facilitation)
Guest Speaker / Interviews /
Questions
*