Question

Write a JAVA program that prompts the user to enter a single name. Use a for loop to determine if the name entered by the user contains at least 1 uppercase and 3 lowercase letters. If the name meets this policy, output that the name has been accepted. Otherwise, output that the name is invalid.

Answer 1

// TestCode.java
import java.util.Scanner;
public class TestCode {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s;
        System.out.print("Enter name: ");
        s = scan.nextLine();

        int uppers = 0, lowers = 0;
        for(int i = 0;i<s.length();i++){
            if(s.charAt(i)>='A' && s.charAt(i)<='Z'){
                uppers++;
            }
            if(s.charAt(i)>='a' && s.charAt(i)<='z'){
                lowers++;
            }
        }

        if(lowers>=3 && uppers>=1){
            System.out.println("name has been accepted");
        }
        else{
            System.out.println("name is invalid");
        }
    }
}