The enumeration control is used to compare TreeSet content ordering (implementing interface comparator) and randomly generating a Chinese character.

Randomly generating a Chinese character/** * Randomly generating a Chinese character * @return * @throws unsupportedencodingexception/public static String Createstr () throws  unsupportedencodingexception {String str = null; int hightpos, lowpos;//define high-low Random Random = new Random (); Hightpos = (176 + Math.Abs (Random.nextint (39)))//Get high value Lowpos = (161 + math.abs (Random.nextint (93)))//Get low value byte[] B = new byte[
2];
B[0] = (new Integer (Hightpos). Bytevalue ());
B[1] = (new Integer (Lowpos). Bytevalue ());
str = new String (b, "GBk");//Convert to Chinese return str;
Sort import java.util.Comparator;
Import Java.util.Set;
     
     
Import Java.util.TreeSet; Class game{private String Materia public string Getmateria () {return materia.} public void Setmateria (String materia)
{This.materia = Materia;} public string GetColor () {return color;} public void SetColor (String color) {This.color = color,} public string Getsha PE () {return shape} is public void Setshape (String shape) {this.shape = shape;} public int getsize () {return size;} PU Blic void setSize (int size) {this.size = size;} private String color;
Private String shape;
private int size; Public Game (String materia,string color,string shape,int size) {this.materia=materia; this.color=color; this.shape=
Shape
This.size=size;
     
     
@Override public String toString () {return materia+ ">" +color+ ">" +shape+ ">" +size;} /** * Referee class is also called comparator. Enumeration for better control of comparison content * @author Lenovo * More highlights: http://www.bianceng.cnhttp://www.bianceng.cn/Programming/ sjjg/* */class K1 implements comparator{public enum Materiaenum {//wood is better than steel better than alloy to plastic wood,steel,alloy,plastic;} public int compare (object O1, Object O2) {//Only Game type has the meaning of comparison, if it is not that type let it be equal do not add if (O1 instanceof) && (Game O2 Gam
e)) {Game g1= (Game) O1;
Game g2= (Game) O2;
int x=0; for (int i = 0; i < materiaenum.values (). length; i++) {if (G1.getmateria (). Equals (Materiaenum.values () [I].tostring ())
     
) {x=i; break;}}
int y=0; for (int i = 0; I <materiaenum.values (). length; i++) {if (G2.getmateria (). EQuals (Materiaenum.values () [I].tostring ())) {y=i; break;}}
int m=x-y; if (m!=0) {return m;} else {int c=g1.getcolor (). CompareTo (G2.getcolor ()), if (c!=0) {return C;} else {int s=g1.getsh
Ape (). CompareTo (G2.getshape ());
if (s!=0) return s;
Return G1.getsize ()-g2.getsize ();
}} return 0; } public class Treesetgame {/** * @param args/@SuppressWarnings ("unchecked") public static void Ma
In (string[] args) {Set gset=new treeset<game> (New K1 ()); Gset.add (New Game ("Wood", "Red", "rectangle", 1));
Gset.add (New Game ("Steel", "Red", "Rectangle", 2));
Gset.add (New Game ("Wood", "Red", "Rectangle", 3));
Gset.add (New Game ("Plastic", "Red", "Rectangle", 3));
System.out.println (Gset); }
     
     
}

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