2006.2.27

public class Untitled1 {



public static void main(String[] args) {
double dieweight,diepeople;
char mouseweight=1;
char peopleweight=50;
dieweight=mouseweight*0.003;
diepeople=(50*dieweight)/0.001;
System.out.println(+mouseweight);
System.out.println("公斤的老鼠吃了0.003克的代糖會死亡,所以");
System.out.println(+peopleweight);
System.out.println("公斤的人喝了");
System.out.println(+dieweight);
System.out.println("瓶的可樂會死亡");




}


}

回家作業一

bytecode： It translate your Java program into a language.
JVM:Bytecode is the machine language for a fictitious computer.
class:A java program is givided into smaller parts.
object:Object-oriented programming has its own specialized terminology.


3. Let i=2;
Print i;
Print 2 * (i++);
Print i;
Ans: 2, 4, 3.
　public class generalwu {
public static void main(String[] arg) {
int i=2,x;
System.out.println(""+i);
　 x=2*(i++);
System.out.println(""+x);
System.out.println(""+i);

}
}
4. Let i=2;
Print i;
Print 2 * (++i);
Print i;
Ans: 2, 6, 3
public class generalwu {
public static void main(String[] arg) {
int i=2,x;
System.out.println(""+i);
x=2*(++i);
System.out.println(""+x);
System.out.println(""+i);

}
}
5. Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;
Ans: 3.5, 3.5
　public class generalwu {
public static void main(String[] arg) {
int l=2,m=7;
System.out.println((double)m/l);
System.out.println(m/(double)l);

　　 }
　　}

作業一

程式內容
package args;

public class Firstprogram {


public static void main(String[] args)
{
System.out.println("hello realer.");
System.out.println("welcome to java.");
System.out.println("let's demonstrate a simple calculation.");
int answer;
answer=2+2;
System.out.println("2 plus 2 is"+answer);
}
}


程式結果
hello realer.

welcome to java.

let's demonstrate a simple calculation.

2 plus 2 is4

我不是故意遲交的---我是有原因的

因為我的網址打錯了
我現在才知道
所以把之前的刪掉
再把對的網址po上去

java

我做完了