入力文字列の長さ、および様々なタイプの文字の数をテストします.

 1 import java.util.Scanner;
 2 public class ScannerTest {
 3 
 4     public static void main(String[] args) {
 5         show1();
 6     }
 7     private static void show1(){
 8         int countUpper=0;
 9         int countLower=0;
10         int countNum=0;
11         int countOfter=0;
12         Scanner scanner = new Scanner(System.in);
13         System.out.print(" ：");
14         String next = scanner.next();
15         System.out.print(" ：");
16         int num = next.length();
17         System.out.println(num);
18         // byte 
19         byte[] bytes = next.getBytes();
20         // 
21         //System.out.println(bytes[0]);
22         // 
23         for (int i = 0; i ) {
24             if(bytes[i]<=58&&bytes[i]>=49){
25                 countNum++;
26             }else if(bytes[i]<=122&&bytes[i]>=97){
27                 countLower++;
28             }else if(bytes[i]<=90&&bytes[i]>=65){
29                 countUpper++;
30             }else{
31                 countOfter++;
32             }
33         }
34         System.out.print(" :
"+countUpper+" ！");
35         System.out.print(""+countLower+" ！");
36         System.out.print(""+countNum+" ！");
37         System.out.print(""+countOfter+" ！");
38     }
39 }