Java Practice Source code on the keyboard randomly input n numbers in the list to output its results from large to small!

/*

* Randomly enter n numbers on the keyboard to the list to output their results from large to small

*/

public class Test01 {

public static void Main (string[] args) {

List list1=new ArrayList ();

Integer cnt=0;

for (int i=0;i<args.length;i++)

{List1.add (Cnt.parseint (Args[i]))//string converted to integer and deposited in List1

}

System.out.println (List1);

Collections.sort (List1);//the sort () natural sort method that invokes the tool class;

Collections.reverse (List1);//tool class inversion function reverse ();

SYSTEM.OUT.PRINTLN ("* * after reversal * *");

System.out.println (List1);

}

}

This is used in the main () method args[] Input:

The first step is to right-click the interface as shown: (Follow the steps)

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Java Practice Source code on the keyboard randomly input n numbers in the list to output its results from large to small!