Homework 3-24-2008

1. 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.

2. Write a program to generate the series 1, 1, 2, 3, 5, 8, 13, ...
The series has a property that the third number is the sum of the first and second numbers. For example, 2=1+1, 3=1+2, and 5=2+3.

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.

Quiz 3-24-2008

1. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.

2. The identifier StreamReader is normally abbreviated as SR in programming language C. However, Java programmers normally do not use abbreviations for identifiers. What are the advantages and disadvantages of not using abbreviations?

3. a. What is "self-documenting"?
b. What is the purpose of "Unicode"? Does Java use it?

4. Give an example of "logic error"

Quiz 1: 3-24-2008

Format: closed book
Running time: 30 min.
Scope: Chap. 1

Homework 3-17-2008

Lab: Keyboard Input
Project 1 of Chap. 2.
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;

Change

Scanner keyboard= new Scanner(System.in);

into

BufferedReader 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

Do Display 2.6.

Homework 3-10-2008: String Processing

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 be

The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.

Hint: You may consider use the methods: indexOf(A_String) and substring(Start, End) in your program.

請務必攜帶課本

• 從 3/ 17 開始，將開始登記未攜帶課本者，同用一桌者至少須有ㄧ本。版本不拘。新舊皆可。
• 尊重智慧財產，不可使用影印本。
  

Lab: Simple Calculation

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.

Homework 3-3-2008

Due 3/10/2008 at 18:50

"tell me and I'll forget; show me and I may remember; involve me and I'll understand"

1. Explain bytecode, JVM
2. Explain class, object
3. Reading Assignments:
Read 1.1, 1.2, 1.3 of Textbook

4.1 Write a Java program as follows:

Let i=2;
Print i;
Print 2 * (i++);
Print i;

Ans: 2, 4, 3

4.2 Write a Java program as follows:

Let i=2;
Print i;
Print 2 * (++i);
Print i;

Ans: 2, 6, 3

4.3 Write a Java program as follows:

Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;

Ans: 3.5, 3.5

Lab 2 Java for Scientific Computation

Do Project 4 on Page 55. (3rd Edition)

Do Project 4 on Page 56. (2nd Edition)

Do Project 1 on Page 54. (1st Edition)

artificial sweetener 人工代糖(過量可以致癌)
diet soda pop 減肥可樂
lose weight 減肥

Lab Get familiar with JBuilder

Do Display 1.1