lab class definition 2

Study Display 4.4 (2nd ed. and 3rd ed.) or Display 4.2 & Display 4.3 (1st ed.) and then1. Comment out date.setDate(6, 17, year); by // date.setDate(6, 17, year);2. At the next line below, add date.readInput();3. Run the program again. Fix any problems you may encouter along the way.4. At the last line of your program, add System.out.println(date.month);and see what happens. Why?

lab class definition

Study Display 4.1 and then do Self-Test Exercise 1.

Homework: 3/23/2009

Write a program to calculate average income by gender based on the following data, where F stands for female and M for male.F 62,000M 25,000F 38,000F 43,000M 65,000M 120,000F 80,000M 30,100You should be able to allow users to type in a whole line such as F 80,000 followed by next line M 30,100.

Lab Cosine

Write a Java program to calculate the triangular function as follows:Cos(x)=1 - x 2 /2!+ x 4/4!- x 6/ 6!...

Lab Fibonacci

List the first 100 numbers and the ratio ofa number to its previous number, such as 1/1 = 1, 2/1 = 2, 3/2 = 1·5, 5/3 = 1·666..., 8/5 = 1·6, 13/8 = 1·625, 21/13 = 1·61538....Want to know more about Fibonacci number

Homework 3-16-2009

1. Project 7 of Chap. 3n=1


n=10

n=50

n=100

2. Write a program to generate the following table of arithmetic expressions
1*1=1 1*2=2 1*3=3 ... 1*9=9
2*1=2 2*2=4 2*3=6 ... 2*9=18
...
9*1=9 9*2=18 9*3=27 ... 9*9=81

Lab Finding the max of a list of numbers

Based on your study of Display 3.8, write a code to find the max and min of a list of number.For example, given 1,3,5, and9, the max is 9 and the min is 1.Your program should be able to process a list of any length.

Lab Finding the max of three numbers

Write a program to decide the max number of the three input number.

Lab Tax Calculation

Study Display 3.1. Based on the income tax rate in Taiwan,calculate the income tax of a person whose annual income is 1,000,000 or 2,000,000.

Homework 3-9-2009

1. Do Project 4 in Chapter 2
2. Do Project 5 in Chapter 2

3. Do Project 6, in Chapter 2

4. Do Project 7, in Chapter 2

Lab Keyboard precessing

Project 3 of Chap. 2.

Lab Keyboard Input

Rewrite Display 2.6 using BufferedReader.You need to import the following packages in the first place.import java.io.BufferedReader;import java.io.InputStreamReader;import java.io.IOException;ChangeScanner keyboard= new Scanner(System.in);intoBufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));String inputString = keyboard.readLine();Note the Main method needs IOException handling as follows:public static void main (String[] args) throws IOException

Lab Scanner

Homework 3-2-2009

1. Write a program that can reverse the order of an input string. For example, if you input "ab", it will output "ba". If you input "abcdefg", it should return "gfedcba".





2. Write a program that can print names alternatively. The names are in the format of "First Name + Last Name" or "Last Name, First Name". For example, if you input "Walt Savitch", your program will output "Savitch, Walt". If you input "Savitch, Walt", your program will output "Walt Savitch".

work3

Do Project 5 of Chap. 1 on Page 56.Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might beThe line of text to be changed is:I hate you.I have rephrased that line to read:I love you.

work2

Write a Java program as follows:Let m=1, n=2;Print m/nPrint m/ (double)n;Print (double) m/n;

work

(b) Write a Java program as follows:Let i=2;Print i;Print 2 * (++i);Print i;Ans: 2, 6, 3




(a) Write a Java program as follows:Let i=2;Print i;Print 2 * (i++);Print i;Ans: 2, 4, 3

HOMEWORK#2

1. Suppose you are a landscape architect who charges $5,000 per mile to landscape a highway, and suppose you know the length in feet of the high way you are working on. Write a Java program to calculate the price you charge when the length is 6000 and 4000, respectively.

Hint: There are 5280 feet in a mile.



2. Write a Java program that displays the results of the expressions 15/4, 4/15, 15%4, 4%15. Calculate the values of these expressions manually to verify that the displayed values are correct.