如何声明一个变量以存储来自 For 循环内的另一个变量的信息？

Question

Attempting to take a string input from user and print the ascii numbers of each character and then add these numbers to another set of integers and doubles. Created a char variable inside the loop to store the ascii values but confused on how I declare another variable to store this outside of the loop so I can add these values to the other figures.

System.out.println("Please enter a String: ");
String stringInput = st.nextLine();
        
for(int i =0;i<stringInput.length(); i++)
{        
    char x = stringInput.charAt(i);
    int charCastedToInt = (int) x;

    System.out.println(charCastedToInt);
}

Answer 1

Nothing sophisticated:

int[] chars = new int[stringInput.length()];
Set<Integer> charSet = new HashSet<>();
List<Integer> charList = new ArrayList<>();

for (int i = 0; i < stringInput.length(); i++) {        
    char x = stringInput.charAt(i);
    int charCastedToInt = (int) x;

    chars[i] = charCastedToInt;
    charSet.add(charCastedToInt);
    charList.add(charCastedToInt);

    System.out.println(charCastedToInt);
}

The cast (int) is not needed here.

The Object class Integer wraps the primitive type int , and is needed for List , Set and other parametrized classes/interfaces.