拡張for文@String.toCharArray();

A-jad.java

// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   A.java

import java.io.PrintStream;

public class A
{

    public A()
    {
    }

    public static void a(String s)
    {
        for(int i = 0; i < s.length(); i++)
            System.out.println((new StringBuilder()).append("").append(s.charAt(i)).toString());

    }

    public static void b(String s)
    {
        char arr$[] = s.toCharArray();
        int len$ = arr$.length;
        for(int i$ = 0; i$ < len$; i$++)
        {
            char c = arr$[i$];
            System.out.println((new StringBuilder()).append("").append(c).toString());
        }

    }

    public static void c(String s)
    {
        char cs[] = s.toCharArray();
        char arr$[] = cs;
        int len$ = arr$.length;
        for(int i$ = 0; i$ < len$; i$++)
        {
            char c = arr$[i$];
            System.out.println((new StringBuilder()).append("").append(c).toString());
        }

    }
}

A-jap.java

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

public static void a(java.lang.String);
  Code:
   0:	iconst_0
   1:	istore_1
   2:	iload_1
   3:	aload_0
   4:	invokevirtual	#2; //Method java/lang/String.length:()I
   7:	if_icmpge	45
   10:	getstatic	#3; //Field java/lang/System.out:Ljava/io/PrintStream;
   13:	new	#4; //class java/lang/StringBuilder
   16:	dup
   17:	invokespecial	#5; //Method java/lang/StringBuilder."<init>":()V
   20:	ldc	#6; //String 
   22:	invokevirtual	#7; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
   25:	aload_0
   26:	iload_1
   27:	invokevirtual	#8; //Method java/lang/String.charAt:(I)C
   30:	invokevirtual	#9; //Method java/lang/StringBuilder.append:(C)Ljava/lang/StringBuilder;
   33:	invokevirtual	#10; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
   36:	invokevirtual	#11; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   39:	iinc	1, 1
   42:	goto	2
   45:	return

public static void b(java.lang.String);
  Code:
   0:	aload_0
   1:	invokevirtual	#12; //Method java/lang/String.toCharArray:()[C
   4:	astore_1
   5:	aload_1
   6:	arraylength
   7:	istore_2
   8:	iconst_0
   9:	istore_3
   10:	iload_3
   11:	iload_2
   12:	if_icmpge	52
   15:	aload_1
   16:	iload_3
   17:	caload
   18:	istore	4
   20:	getstatic	#3; //Field java/lang/System.out:Ljava/io/PrintStream;
   23:	new	#4; //class java/lang/StringBuilder
   26:	dup
   27:	invokespecial	#5; //Method java/lang/StringBuilder."<init>":()V
   30:	ldc	#6; //String 
   32:	invokevirtual	#7; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
   35:	iload	4
   37:	invokevirtual	#9; //Method java/lang/StringBuilder.append:(C)Ljava/lang/StringBuilder;
   40:	invokevirtual	#10; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
   43:	invokevirtual	#11; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   46:	iinc	3, 1
   49:	goto	10
   52:	return

public static void c(java.lang.String);
  Code:
   0:	aload_0
   1:	invokevirtual	#12; //Method java/lang/String.toCharArray:()[C
   4:	astore_1
   5:	aload_1
   6:	astore_2
   7:	aload_2
   8:	arraylength
   9:	istore_3
   10:	iconst_0
   11:	istore	4
   13:	iload	4
   15:	iload_3
   16:	if_icmpge	57
   19:	aload_2
   20:	iload	4
   22:	caload
   23:	istore	5
   25:	getstatic	#3; //Field java/lang/System.out:Ljava/io/PrintStream;
   28:	new	#4; //class java/lang/StringBuilder
   31:	dup
   32:	invokespecial	#5; //Method java/lang/StringBuilder."<init>":()V
   35:	ldc	#6; //String 
   37:	invokevirtual	#7; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
   40:	iload	5
   42:	invokevirtual	#9; //Method java/lang/StringBuilder.append:(C)Ljava/lang/StringBuilder;
   45:	invokevirtual	#10; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
   48:	invokevirtual	#11; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   51:	iinc	4, 1
   54:	goto	13
   57:	return

}

A.java

public class A
{
  public static void a(String s){
  	for(int i = 0; i < s.length(); i++) {
			System.out.println("" + s.charAt(i) );
		}
	}
	public static void b(String s){
		for(char c: s.toCharArray()) {
			System.out.println("" + c );
		}
	}
	public static void c(String s){
		char[] cs = s.toCharArray();
		for(char c: cs) {
			System.out.println("" + c );
		}
	}
}