Compiled from “stringTest.java”
public class stringTest.stringTest {
public stringTest.stringTest();
Code:
0: aload_0
1: invokespecial #8 // Method java/lang/Object.""?)V
4: return
public static void main(java.lang.String[]);
Code:
//Jerry: ldc 把常量池中的项压入栈
0: ldc #16 // String Jerry
//Jerry: astore_1 将引用类型或returnAddress类型值存入局部变量1
2: astore_1
3: ldc #18 // String JS
5: astore_2
6: ldc #20 // String Developer
8: astore_3
//Jerry: 创建一个新对象
9: new #22 // class java/lang/StringBuilder
12: dup
//Jerry: 从局部变量1中装载引用类型值
13: aload_1
14: invokestatic #24 // Method java/lang/String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
//Jerry:根据编译时类型来调用实例方法
17: invokespecial #30 // Method java/lang/StringBuilder."<init>":(Ljava/lang/String;)V
20: aload_2
21: invokevirtual #33 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
24: aload_3
25: invokevirtual #33 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
28: invokevirtual #37 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
31: astore 4
33: getstatic #41 // Field java/lang/System.out:Ljava/io/PrintStream;
36: aload 4
38: invokevirtual #47 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
41: return
}
Compiled from “stringTestLoop.java”
public class stringTest.stringTestLoop {
public stringTest.stringTestLoop();
Code:
0: aload_0
1: invokespecial #8 // Method java/lang/Object.""?)V
4: return
public static void main(java.lang.String[]);
Code:
0: ldc #16 // String
2: astore_1
3: iconst_3
4: anewarray #18 // class java/lang/String
7: dup
8: iconst_0
9: ldc #20 // String 1
11: aastore
12: dup
13: iconst_1
14: ldc #22 // String 2
16: aastore
17: dup
18: iconst_2
19: ldc #24 // String 3
21: aastore
22: astore_2
23: iconst_0
24: istore_3
25: goto 52
28: new #26 // class java/lang/StringBuilder
31: dup
32: aload_1
33: invokestatic #28 // Method java/lang/String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
36: invokespecial #32 // Method java/lang/StringBuilder."":(Ljava/lang/String;)V
39: aload_2
40: iload_3
41: aaload
42: invokevirtual #35 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
45: invokevirtual #39 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
48: astore_1
49: iinc 3, 1
52: iload_3
53: aload_2
54: arraylength
55: if_icmplt 28
58: getstatic #43 // Field java/lang/System.out:Ljava/io/PrintStream;
61: aload_1
62: invokevirtual #49 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
65: return
}
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