Using delimeter to seperate Scanner input into different dataTypes.(String, int, - delimiter

Question

how can i use delimiter " : " to receive a string from (system.in ) E.g Ben : 50. Jessica : 30 and so on , and then print as Ben, 50 using my own System.out.print (name + "," + score); I was able to print out the string as string but its not printing out the integer as integer. I need to calculate the average of all the score and that is why i need integer to remain integer so the average method can work Here is my code . Here is my code so far. Please help !!!
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import java.util.Scanner;
public class StudentScore{
public static void main(String [] args){
Scanner input = new Scanner(System.in);
input.useDelimiter(":");
System.out.print("Please enter your name and score in format: Ben : 50" );
String name = input.next();
int score = input.nextInt();
while(input.hasNext() || input.hasNextInt());{
System.out.println(name + ", " + score);
}
input.close();
}
}
this keeps creeating a new scanner and no print out.

Answer 1

After researching and asking several people , i found out the String class actually has a function that takes in string and then splits it into several primitive values" long", " int" and so on. You need to convert your input into an array, make sure it is spitted by a delimiter of choice .e.g "," or ":" in my own case. Then the array will be your parameter for the .split method from the String class. I posted my complete program below. The programs takes in three names and score and outputs the grade letter and then tells the best score among the three students.
import java.util.Scanner;
public class ThreeNamesAndScore {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Please enter your name and score in this format, Name : Score");
String input1 = input.nextLine();
String[] userData1 = input1.split(":");
String firstStudentName = userData1[0];
String firstStudentStrScore = userData1[1];
int firstStudentScore = Integer.parseInt(firstStudentStrScore);
System.out.print("Please enter your name and score in this format, Name : Score");
String input2 = input.nextLine();
String[] userData2 = input2.split(":");
String secondStudentName = userData2[0];
String secondStudentStrScore = userData2[1];
int secondStudentScore = Integer.parseInt(secondStudentStrScore);
System.out.print("Please enter your name and score in this format, Name : Score");
String input3 = input.nextLine();
String[] userData3 = input3.split(":");
String thirdStudentName = userData3[0];
String thirdStudentStrScore = userData3[1];
int thirdStudentScore = Integer.parseInt(thirdStudentStrScore);
System.out.println("The following is the fianl result ");
System.out.println(firstStudentName + ", " + getGradeLetter(firstStudentScore));
System.out.println(secondStudentName + ", " + getGradeLetter(secondStudentScore));
System.out.println(thirdStudentName + ", " + getGradeLetter(thirdStudentScore));
System.out.println("The best score is from " + bestScore(input1, input2, input3));
input.close();
}
public static String getGradeLetter(int score) {
if (score >= 90) {
return "A";
} else if (score >= 80) {
return "B";
} else if (score >= 70) {
return "C";
} else if (score >= 60) {
return "D";
} else
return "F";
}
public static String bestScore(String a, String b, String c) {
String bestStudent;
String[] userInputs = { a, b, c };
String[] user1 = a.split(":");
String aStrScore = user1[1];
int aScore = Integer.parseInt(aStrScore);
String[] user2 = b.split(":");
String bStrScore = user2[1];
int bScore = Integer.parseInt(bStrScore);
String[] user3 = c.split(":");
String cStrScore = user3[1];
int cScore = Integer.parseInt(cStrScore);
if ((aScore > bScore) && (aScore > cScore))
bestStudent = a;
else if ((bScore > aScore) && (bScore > cScore))
bestStudent = b;
else
bestStudent = c;
return bestStudent;
}
}