Enter the number of pods：
the number of peas in a pod：
10
20
10 pods and 20 peas per pod.
The total number of peas = 200
2007年10月5日 星期五
Lab: Keyborad Input
Enter the number of pods：
the number of peas in a pod：
10
20
10 pods and 20 peas per pod.
The total number of peas = 200
Lab: Scanner
Enter the number of pods followed by
the number of peas in a pod
50 21
50pods and21peas per pod
The total number of peas =1050
Lab: Adding Links on Your Blog
1. Check into your blog homepage.
2. Enter "自訂"
3. Select "連結清單"
4. Write down "http://javaatcycu.blogspot.com/" and the title as "Java物件導向程式設計"
5. Also add your own favorite links.
2. Enter "自訂"
3. Select "連結清單"
4. Write down "http://javaatcycu.blogspot.com/" and the title as "Java物件導向程式設計"
5. Also add your own favorite links.
2007年9月28日 星期五
Homework 9-28-2007 String Processing
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.
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.
Lab 9-28-2007 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.
Ans:
如果是4000feet的話,需要3787.878787878788元
如果是6000feet的話,需要5681.818181818182元
Hint: There are 5280 feet in a mile.
Ans:
如果是4000feet的話,需要3787.878787878788元
如果是6000feet的話,需要5681.818181818182元
Homework 9/21/2007
"tell me and I'll forget; show me and I may remember; involve me and I'll understand"
1. Explain bytecode, JVM
Byte-Code:可將我們所寫的程式經過編譯後產出的中間碼。
JVM:Java Virtual Machine.一個以軟體模擬出來的機器環境，可用來執行java 的 byte code。
2. Explain class, object
class是object的集合，用來描述屬性(Property)跟方法(Method)。
object是物件，包含在CLASS裡
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
1. Explain bytecode, JVM
Byte-Code:可將我們所寫的程式經過編譯後產出的中間碼。
JVM:Java Virtual Machine.一個以軟體模擬出來的機器環境，可用來執行java 的 byte code。
2. Explain class, object
class是object的集合，用來描述屬性(Property)跟方法(Method)。
object是物件，包含在CLASS裡
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
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