Monday 9-22 : Notes - Data Entities in Java
Quiz material
Identify and describe the two data entities in java.
List the four basic primitive data types.
List and arrange in order of size the four primitive integer data types.
Explain overflow and underflow.
Compare and contrast a variable declaration and a variable initialization.
Identify and describe an integer literal, character literal, double literal, and a string literal.
Tuesday 9-23
Today we will take a pre-test over strings, view a slideshow over the String class, and then you will answer approximately 16 questions over the String class documentation.
String pre-test : Do NOT discuss the questions while you are taking the pre-test. The only way you will NOT receive full credit for the pre-test assignment is if I get a report from the substitute that students were talking while taking this. Questions in red are to be omitted. After taking the pre-test, view the slideshow. Take the pre-test.
Slideshow
Questions over the String Class documentation. ONLY ANSWER THE BLUE TEXT QUESTIONS! Do not answer questions in black text. This is not part of the pre-test. Answer the questions. Due Midnight tonight
Wednesday 9-24
Java Basic Questions - You may use books and the Internet. You can NOT use each other. Submit before leaving.
Move so that no two students are next to one another like we do when taking a quiz. In the ID field put the station you are setting at. You do not have log off the station you are at now.
Basic Questions
Thursday 9-25 :
Objects in memory
Line class consisting of two Points - write the following :
public double calcSlope() and
public double calcDistance
Friday 9-26
Homecoming
Last Week
Monday 9-15
toString methods
Person class
String Class Documentation
Tuesday 9-16
String Class
Wednesday 9-17
Quiz
Thursday 9-18 :
Writing an application with the Point class
Friday 9-19
Grades
Fraction Class Modifications
1. No magic numbers - use constants or comments
final <data type> identifier = <value> ;
2. Rearrange the methods as indicated below and discussed in class. This is for grading purposes.
3. TEST, TEST, and TEST your methods!
Assume a fraction will not be constructed if the denominator is 0.
Required method order in the Fraction class.
constructors - 1
accessors - 2 typical accessors
modifiers - 2 typical modifiers and
simplify -
Simplifies the fraction by dividing the numerator and denominator by the greatest common factor (GCF)
multByWholeNumber -
multiplies the fraction by a whole number.
invert -
changes the fraction to its reciprocal.
helper methods
isImproper -
returns true if the numerator is greater than the denominator.
isWholeNumber -
returns true if the denominator divides evenly into the numerator.
getGCF - returns the largest number that divides evenly into the numerator and denominator.
getDecValue -
returns the decimal value of the fraction
getPctValue -
returns the decimal value as a percentage.
Add one more to the list
toString -
returns the fraction as a string in the form of x / y
additional modifier methods
additional modifier methods here.
additional helper methods
additional helper methods here.
Submit the code by midnight sunday.
