Re: Nesting classes

In C++, it is always possible to have one class nested inside other or
for that matter, a data structure nested inside other data structure.
Something like:

class A
{
    public:
      struct A1
       {
             char a[10];
             char b[10];
       } a1;
      struct A2
       {
             char a2[10];
             char b2[10];
       } a2;
        ...........

};

What i am struggling with is, i am searching for similar representation
for a java class.
I tried doing it as:

public class Temp
{
   class A1
   {
       public String a1;
       public String b1;
   };
   class A2
   {
       public String a2;
       public String b2;
   };

    ..............
};

This gets compiled but what i see is n no. of .java files get generated
named:

Temp.java
Temp$A1.java
Temp$A2.java

This behavior is coming as a surprise package to me.
I agree i dont't know much of java and am a begineer in this.