java -parameters 有無それぞれで javap -v ってみた。

-parametersあり

Classfile /x/Hoge.class
  Last modified 2013/03/10; size 301 bytes
  MD5 checksum 41f968697a1e7fe44a4d38e2d709d560
  Compiled from "Hoge.java"
public class Hoge
  SourceFile: "Hoge.java"
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #3.#15         //  java/lang/Object."<init>":()V
   #2 = Class              #16            //  Hoge
   #3 = Class              #17            //  java/lang/Object
   #4 = Utf8               <init>
   #5 = Utf8               ()V
   #6 = Utf8               Code
   #7 = Utf8               LineNumberTable
   #8 = Utf8               hoge
   #9 = Utf8               (Ljava/lang/String;I)V
  #10 = Utf8               MethodParameters
  #11 = Utf8               str
  #12 = Utf8               i
  #13 = Utf8               SourceFile
  #14 = Utf8               Hoge.java
  #15 = NameAndType        #4:#5          //  "<init>":()V
  #16 = Utf8               Hoge
  #17 = Utf8               java/lang/Object
{
  public Hoge();
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0       
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return        
      LineNumberTable:
        line 1: 0

  public void hoge(java.lang.String, int);
    flags: ACC_PUBLIC
    Code:
      stack=0, locals=3, args_size=3
         0: return        
      LineNumberTable:
        line 3: 0
    MethodParameters:
      Name                           Flags
      str                            
      i                              
}

-parametersなし

Classfile /x/Hoge.class
  Last modified 2013/03/10; size 253 bytes
  MD5 checksum e0af2283b1c1452d9aef70c530fde0be
  Compiled from "Hoge.java"
public class Hoge
  SourceFile: "Hoge.java"
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #3.#12         //  java/lang/Object."<init>":()V
   #2 = Class              #13            //  Hoge
   #3 = Class              #14            //  java/lang/Object
   #4 = Utf8               <init>
   #5 = Utf8               ()V
   #6 = Utf8               Code
   #7 = Utf8               LineNumberTable
   #8 = Utf8               hoge
   #9 = Utf8               (Ljava/lang/String;I)V
  #10 = Utf8               SourceFile
  #11 = Utf8               Hoge.java
  #12 = NameAndType        #4:#5          //  "<init>":()V
  #13 = Utf8               Hoge
  #14 = Utf8               java/lang/Object
{
  public Hoge();
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0       
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return        
      LineNumberTable:
        line 1: 0

  public void hoge(java.lang.String, int);
    flags: ACC_PUBLIC
    Code:
      stack=0, locals=3, args_size=3
         0: return        
      LineNumberTable:
        line 3: 0
}

Hoge.java

public class Hoge {
  public void hoge(String str, int i) {
  }
}