Yes, this has been the case for sometime where internally append is used.
Try the same with a loop.
On Tue, Dec 15, 2015 at 11:43 PM, Manuranga Perera <m...@wso2.com> wrote:
> I have compiled following class using javac 1.6.0_38
>
> class X{
> public String m(String a, String b, String c){
> return a + b + c;
> }
> }
>
>
> and decoupled using javap
>
>
> class X {
> X();
> Code:
> 0: aload_0
> 1: invokespecial #1 // Method
> java/lang/Object."<init>":()V
> 4: return
>
> public java.lang.String m(java.lang.String, java.lang.String,
> java.lang.String);
> Code:
> 0: new #2 // class
> java/lang/StringBuilder
> 3: dup
> 4: invokespecial #3 // Method
> java/lang/StringBuilder."<init>":()V
> 7: aload_1
> 8: invokevirtual #4 // Method
> java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
> 11: aload_2
> 12: invokevirtual #4 // Method
> java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
> 15: aload_3
> 16: invokevirtual #4 // Method
> java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
> 19: invokevirtual #5 // Method
> java/lang/StringBuilder.toString:()Ljava/lang/String;
> 22: areturn
> }
>
> As you can see, there are three appends but only one StringBuilder
> objects. Therefor I purpose using plus instead of append in our code.
>
>
>
> --
> With regards,
> *Manu*ranga Perera.
>
> phone : 071 7 70 20 50
> mail : m...@wso2.com
>
--
*Afkham Azeez*
Director of Architecture; WSO2, Inc.; http://wso2.com
Member; Apache Software Foundation; http://www.apache.org/
* <http://www.apache.org/>*
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