第二个JAVA程序

import java.util.Scanner;
public class Test4 {
    public static void main(String[] args) {
     Scanner sc= new Scanner (System.in); 
     int a;
     String str;
     double e;
     System.out.println("shuruyigezhengshu: ");
     a= sc.nextInt();
     System.out.println(a);
     System.out.println("qingshuruyigezifuchuan::");
     str = sc.nextLine();
     str = sc.nextLine();
     System.out.println(str);
     System.out.println("qingshuruyigexiaoshu:");
     e = sc.nextDouble();
     System.out.println(e);
    }
    
}

运行结果

第三个JAVA程序

import java.util.Scanner;
public class Test5 {
    public static void main(String[] args) {
        int[] arr=new int[5];
        for (int i=0; iarr[i]){
                min=arr[i];
            }
        }
         System.out.println("max:"+max+"min:"+min);
    }
    
}

输出结果