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CCT社内勉強会用のものです
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| public class Fact { | |
| public static int fact(int n) { | |
| if(i < 0) throw new IllegalArgumentException("n must be >= 0"); | |
| int r = 1; | |
| for(int i = 1; i <= n; i++) { | |
| r *= i; | |
| } | |
| return r; | |
| } | |
| } |
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| public class HelloWorld { | |
| public static void main(String[] args) { | |
| System.out.println("Hello, World!"); | |
| } | |
| } |
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| Compiled from "Fact.java" | |
| public class Fact { | |
| public Fact(); | |
| Code: | |
| 0: aload_0 | |
| 1: invokespecial #1 // Method java/lang/Object."<init>":()V | |
| 4: return | |
| public static int fact(int); | |
| Code: | |
| 0: iload_0 | |
| 1: ifge 14 | |
| 4: new #2 // class java/lang/IllegalArgumentException | |
| 7: dup | |
| 8: ldc #3 // String n must be >= 0 | |
| 10: invokespecial #4 // Method java/lang/IllegalArgumentException."<init>":(Ljava/lang/String;)V | |
| 13: athrow | |
| 14: iconst_1 | |
| 15: istore_1 | |
| 16: iconst_1 | |
| 17: istore_2 | |
| 18: iload_2 | |
| 19: iload_0 | |
| 20: if_icmpgt 33 | |
| 23: iload_1 | |
| 24: iload_2 | |
| 25: imul | |
| 26: istore_1 | |
| 27: iinc 2, 1 | |
| 30: goto 18 | |
| 33: iload_1 | |
| 34: ireturn | |
| public static void main(java.lang.String[]); | |
| Code: | |
| 0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream; | |
| 3: iconst_5 | |
| 4: invokestatic #6 // Method fact:(I)I | |
| 7: invokevirtual #7 // Method java/io/PrintStream.println:(I)V | |
| 10: return | |
| } |
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Compiled from "Fact.java"
public class Fact {
public Fact();
Code:
0: aload_0
1: invokespecial #1 // Method java/lang/Object."":()V
4: return
public static int fact(int);
Code:
0: iload_0
1: ifge 14
4: new #2 // class java/lang/IllegalArgumentException
7: dup
8: ldc #3 // String n must be >= 0
10: invokespecial #4 // Method java/lang/IllegalArgumentException."":(Ljava/lang/String;)V
13: athrow
14: iconst_1
15: istore_1
16: iconst_1
17: istore_2
18: iload_2
19: iload_0
20: if_icmpgt 33
23: iload_1
24: iload_2
25: imul
26: istore_1
27: iinc 2, 1
30: goto 18
33: iload_1
34: ireturn
public static void main(java.lang.String[]);
Code:
0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream;
3: iconst_5
4: invokestatic #6 // Method fact:(I)I
7: invokevirtual #7 // Method java/io/PrintStream.println:(I)V
10: return
}