Assembly Language for Beginners

4.1. JAVA

Listing 4.14: from some random .class file found on the author’s computer
.catch java/io/FileNotFoundException from met001_335 to met001_360\
using met001_360
.catch java/io/FileNotFoundException from met001_185 to met001_214\
using met001_214
.catch java/io/FileNotFoundException from met001_181 to met001_192\
using met001_195
.catch java/io/FileNotFoundException from met001_155 to met001_176\
using met001_176
.catch java/io/FileNotFoundException from met001_83 to met001_129 using \
met001_129
.catch java/io/FileNotFoundException from met001_42 to met001_66 using \
met001_69
.catch java/io/FileNotFoundException from met001_begin to met001_37\
using met001_37

4.1.16 Classes

Simple class:

Listing 4.15: test.java

public class test
{
public static int a;
private static int b;

public test()
{
a=0;
b=0;
}
public static void set_a (int input)
{
a=input;
}
public static int get_a ()
{
return a;
}
public static void set_b (int input)
{
b=input;
}
public static int get_b ()
{
return b;
}
}

The constructor just sets both fields to zero:

public test();

flags: ACC_PUBLIC

Code:

stack=1, locals=1, args_size=1

0: aload_0

1: invokespecial #1 // Method java/lang/Object."<init>":()V

4: iconst_0

5: putstatic #2 // Field a:I

8: iconst_0

9: putstatic #3 // Field b:I

12: return

Setter ofa:

public static void set_a(int);

flags: ACC_PUBLIC, ACC_STATIC