Java object-oriented programming exercises (once)

Recently, I'm going to share some of the little exercises I've studied before, to be a solid knowledge. Although it is a small exercise, but the more you see the more interesting, warm and know new.

Exercise: Function diving competition, 8 judges rating. The average score after the top and bottom of the athlete's performance is removed

code example:

1. Guide Package

Import Java.io.BufferedReader; Import java.io.IOException; import Java.io.InputStreamReader;

2. Test class

 public  class    Demo6 { /**   *   @param   args  */ public  static  void   main (string[] args) { //  TODO auto-generated method stub  Judge judge=new   Judge ();  // judge.getlastfen (); Do not print, how to produce results oh      System.out.println (Judge.getlastfen ()); }}

3.Judge Class (encapsulation method, very good object-oriented programming)

classJudge {//define one that can hold 8 decimal places    floatFens[] =NULL; //defined here, convenient for later change    intSize = 8; //Constructor Code initialization is specialized, it becomes more canonical     PublicJudge () {fens=New float[size]; //InitializeBufferedReader br =NewBufferedReader (NewInputStreamReader (system.in)); //for (int i=0;i<fens.length;i++) {//cannot be written here: System.out.println ("Please enter" + (i+1) + "referee's score");        Try {             for(inti = 0; i < fens.length; i++) {System.out.println ("Please enter" + (i + 1) + "Referee's score"); Fens[i]=float.parsefloat (Br.readline ()); }        } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); } finally {            Try{br.close (); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }        }    }    //get the athlete's final score     Public floatGetlastfen () {//Features://find the lowest, highest (no way to get rid of it, only to find its subscript) and remove the lowest highest to draw the final score        floatAllfen = 0; intMinindex = This. Getlowfenindex (); intMaxindex = This. Gethightfenindex ();  for(inti = 0; i < fens.length; i++) {            if(I! = Minindex && I! =Maxindex) {Allfen+=Fens[i]; }        }        returnAllfen/(Fens.length-2); }     Public intGetlowfenindex () {//Selection method: Think the first one is the lowest score        floatMinfen = Fens[0]; intMinindex = 0;  for(inti = 1; i < fens.length; i++) {            //Modify the minimum score            if(Minfen <Fens[i]) {Minfen=Fens[i]; Minindex=i; }        }        returnMinindex; }     Public intGethightfenindex () {//Selection method: Think the first one is the lowest score        floatMaxfen = Fens[0]; intMaxindex = 0;  for(inti = 1; i < fens.length; i++) {            //Modify the minimum score            if(Maxfen <Fens[i]) {Maxfen=Fens[i]; Maxindex=i; }        }        returnMaxindex; }}

In addition, recently felt that the generics really is a very magical existence. What did the designer think of it?! Smart dead.

Generics can use an indeterminate type to represent any type. Great location!!!

Java object-oriented programming exercises (once)