01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
package template.ftoc;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
/* This example is from Robert C. Martin */
public class Main {
public static void main(String[] args) {
(new FtoC()).run();
}
}
/* public */
abstract class Application {
private boolean isDone = false;
protected abstract void init();
protected abstract void idle();
protected abstract void cleanup();
protected boolean done() {
return isDone;
}
protected void setDone() {
isDone = true;
}
public void run() {
init();
while (!done())
idle();
cleanup();
}
}
final class FtoC extends Application {
private BufferedReader br;
protected void init() {
br = new BufferedReader(new InputStreamReader(System.in));
}
protected void idle() {
String fstring = readLine();
if (fstring == null || fstring.length() == 0) {
setDone();
} else {
double f = Double.parseDouble(fstring);
double c = 5.0/9.0*(f-32);
System.out.println("F=" + f + ", C=" + c);
}
}
protected void cleanup() {
System.out.println("FtoC exit");
}
private String readLine() {
try { return br.readLine(); }
catch(IOException e) { return null; }
}
}
|
