Java Getting started the third season sort exercise

Package Imooc_collection_map_demo;

Import java.util.ArrayList;
Import java.util.Collections;
Import java.util.List;
Import Java.util.Random;

/**
Practice
* 1, after creating the list<string>, add 10 random strings to it
* 2, a random integer with a length of 10 or less for each string
* 3, each character of each string is a randomly generated character, the character can be repeated
* 4, each random string is not repeatable
*/
public void Testprotice () {
List<string>stringpro=new arraylist<string> ();
Random random2=new random ();
Char[]temp=null;
int length;
int casebyte;
for (int i=0;i<10;i++) {
do{
Length=random2.nextint (9) +1;
temp = new Char[length];
for (int j=0;j<length;j++) {
Casebyte=random2.nextint (3);
Switch (casebyte) {
Case 0:
Temp[j]= (char) (Random2.nextint (26) + 97);
Break
Case 1:
Temp[j]= (char) (Random2.nextint (10) +48);
Break
Case 2:
Temp[j]= (char) (Random2.nextint (26) +65);
Break
}
}
}while (Stringpro.contains (string.valueof (temp)));
Stringpro.add (string.valueof (temp));
SYSTEM.OUT.PRINTLN ("Successfully added string:" +string.valueof (temp));
}

SYSTEM.OUT.PRINTLN ("----------before sorting");
for (String String:stringpro) {
System.out.println ("element:" +string);
}
Collections.sort (Stringpro);
System.out.println ("--------------after sorting");
for (String String:stringpro) {
System.out.println ("element:" +string);
}
}

/**
* @param args
*/
public static void Main (string[] args) {
Collectionstest ct=new collectionstest ();
Ct.testprotice ();
}

}

Java Getting started the third season sort exercise