Wrapper Class Java print the range of the integral types (byte,chort,int and lon

Question

Wrapper Class Java

print the range of the integral types (byte,chort,int and long) in columns

create 4 character variables that arfe initialized 'a', 'A', '#', and '6'.

print for each characters whether it's a number, a letter, and/or uppercase

Use a private method to print the letter evaluation

Output

Byte -128 127

short -32,768 32,767

Int -2,147,483,648 2,147,483,647

Long -9,223,372,036,854,775,808 9,223,372,036,854,775,887

a: letter

A: letter uppercase

#:

6: number

we made this code in class

package wrapperClass;

public class LabWrapperClass {

   public static void main(String[] args) {
       System.out.printf("%9s: %-,30d %,d %n","Byte",Byte.MIN_VALUE,Byte.MAX_VALUE);
       System.out.printf("%9s: %-,30d %,d %n","Short",Short.MIN_VALUE,Short.MAX_VALUE);
       System.out.printf("%9s: %-,30d %,d %n","Integer",Integer.MIN_VALUE,Integer.MAX_VALUE);
       System.out.printf("%9s: %-,30d %,d %n","Long",Long.MAX_VALUE,Long.MAX_VALUE);
      
//       char a = 'a';
//       char upperA = 'A';
//       char hash = '#';
//       char six = '6';
//      
//       System.out.println("a: " + caseAndNumber(a));
//       System.out.println("A: " + caseAndNumber(upperA));
//       System.out.println("#: " + caseAndNumber(hash));
//       System.out.println("6: " + caseAndNumber(six));
//   }
//  
//   private static String caseAndNumber(char a){
//       String letter;
//       if(Character.isAlphabetic(a)){
//           letter = Character.isUpperCase(a) ? "letter uppercase" : "letter";
//       }else
//       letter = Character.isDigit(a) ? "number" :"";
//       return letter;
   }

}

Explanation / Answer

public class LabWrapperClass {

    public static void main(String[] args) {
        System.out.printf("%9s: %-,30d %,d %n","Byte",Byte.MIN_VALUE,Byte.MAX_VALUE);
        System.out.printf("%9s: %-,30d %,d %n","Short",Short.MIN_VALUE,Short.MAX_VALUE);
        System.out.printf("%9s: %-,30d %,d %n","Integer",Integer.MIN_VALUE,Integer.MAX_VALUE);
        System.out.printf("%9s: %-,30d %,d %n","Long",Long.MAX_VALUE,Long.MAX_VALUE);
       
        char a = 'a';
        char upperA = 'A';
        char hash = '#';
        char six = '6';
       
        System.out.println("a: " + caseAndNumber(a));
        System.out.println("A: " + caseAndNumber(upperA));
        System.out.println("#: " + caseAndNumber(hash));
        System.out.println("6: " + caseAndNumber(six));
    }
   
    private static String caseAndNumber(char a){
        String letter;
        if(Character.isAlphabetic(a)){
            letter = Character.isUpperCase(a) ? "letter uppercase" : "letter";
        }else
        letter = Character.isDigit(a) ? "number" :"";
        return letter;
    }

}

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