【java基础知识】使用javap对代码进行反汇编

public class TestJavap {
public static void main(String[] args){
int i = 0;
i = i++;
System.out.println(i);
}
}

> javac TestJavap.java

public class TestJavap {
public TestJavap() {
}

public static void main(String[] var0) {
byte var1 = 0;
byte var10000 = var1;
int var2 = var1 + 1;
var1 = var10000;
System.out.println(var1);
}
}

> javap -c TestJavap.class

Compiled from "TestJavap.java"
public class TestJavap {
public TestJavap();
Code:
0: aload_0
1: invokespecial #1                  // Method java/lang/Object."<init>":()V
4: return

public static void main(java.lang.String[]);
Code:
0: iconst_0       // 将0放入栈顶
1: istore_1       // 将栈顶值放到变量1中
2: iload_1       // 将变量1放入栈顶
3: iinc          1, 1   // 变量1的值+1
6: istore_1     // 将栈顶值放到变量中
7: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
10: iload_1
11: invokevirtual #3                  // Method java/io/PrintStream.println:(I)V
14: return
}

0