An array whose elements are not arrays is called a 1-dimensional array.
A 2-dimensional array is an array whose elements are 1-dimensional arrays.
To define a 2-dimensional array, we can use the fo
Class Scanner revisited
-Usage: public int nextInt()
If next token can be converted to an int, the scanner reads and advances past the token.
Return: If input is successful, the input token read as an int.
OBJECT ORIENTED THINKING
Case study - The Body Mass Index problem
public class BMIClient
/Desc: Computes the BMI of the user.
Body Mass Index (BMI) is a measure of health on weight. I
THE FILE CLASS
A collection of related persistent data stored on a secondary storage device is called a file.
Class File does not provide any processing capabilities for files. Rather, we use class File to obtain
information about a
USER-DEFINED CLASS TYPES
Software engineering principle data abstractions
public class Demo
/Input: The user enters the radius of a circle
/Output: The area and circumference of the spec
The String class represents a sequence of characters.
String objects are not mutable. That is, no String methods change the String itself.
A String literal (constant) is a sequence of characters enclosed within double quotes as in "
Java provides the Vector class which implements a dynamic array.
o Vector object can grow as needed to accommodate adding and removing items after the Vector
object has been created. Class Vector is in java.util.
A program consists of instructions to manipulate data items.
o A data item manipulated by a program must belong to a data type.
o A data type can be basic or complex.
We have discussed the _ basic types provided by Java. We ha
MORE ON OBJECTS
A basic type variable is not an object
public class Demo
public static void main(String args)
An object is not a basic type variable
OBJECTS AND CLASSES
An object is a data item of a _ type.
We call an object an _ of a class type.
An object has a set of data members which defines its _, and it has a set of methods which
defines its _.
A Java class type uses non-static dat
MORE ON CLASSES
/Class Employee supports objects representing employees working in a typical company. Each Employee
/object knows his/her id, name, and salary.
public class Employee
File 8 PRACTICE PRELIM II MATH-0096/0097 SUMMER 2010 DIRECTIONS: Work out all problems on your paper and circle your answers. Do not write on both sides of your exam papers. DO NOT
PASS IN THIS TEST PAPER.
I. FRACTIONS, DECIMALS, AND PERCENTS (1) Write 34
[FILE 17] SOME ASPECTS ON RATIONAL EXPRESSIONS(Pages 621-653)
Sometimes we will encounter mathematical expressions containing fractions and we must be able to simplify them. There are several techniques that can be used to simplify such an expression. N