java - Understanding some concepts -

I am new to Java and am trying to understand the following piece of code.

  public squares foo bar & lt; Type, Type 2 & gt; {@Override public SomeFoo & lt; Type, Type 2 & gt; GetReader (type type) throws IOException {back to something new difference (type); }}   
 I am trying to understand what is  public SomeFoo .  
 Is not this a class ?? This is a constructor .. Why does it give something?  
 When will I  
  Phu Bubar = New Foo ()   
  Phupar  What will happen  
 and  bar; Type, Type 2 & gt;  What will happen? Why do we use these arrow brackets?   
 
 
  Public SomeFoo & lt; Type, Type 2 & gt; GetReader (type type)  is a legacy method from a  bar  class, we know that it is due to the use of  extension  in class definition  bar  inherited from  
  Phu buzzar = new foo ()  is the means of referencing the object,  foo  object and  foobers  creates.  
 parenthesis  & lt; & Gt;   
 
 
 
  
     
   
 Like others, I would recommend them to read here