[Solved] Only allowing numbers to be taken from user input in java

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Inside your while loop use the following code:

System.out.print("Enter the test score: ");
while (!keyboard.hasNextInt()) {//Will run till an integer input is found
    System.out.println("Only number input is allowed!");
    System.out.print("Enter the test score: ");
    keyboard.next();
}
int tS = keyboard.nextInt();
//If input is a valid int value then the above while loop would not be executed   
//but it will be assigned to your variable 'int ts'
count++;

sum = (sum + tS);

solved Only allowing numbers to be taken from user input in java