Java无法识别计算？

我是Java的初学者,失去了情节.有人可以帮助我,我只是想让这个代码工作.一切都运行良好,除了最后的计算.我复制并粘贴了代码和输出.

import java.util.Scanner;
public class newfile {
public static void main(String[]args) { // starting point of the program
    Scanner input = new Scanner(System.in);
    int oneA, oneB, oneC;
    double finA=0, finB=0, finC=0,average=0;

    System.out.println("Hello, Welcome to the 'Calculate Your Grades' program!\nPlease input your predicted grade for Assignment 1A in a percentage format:");
    oneA=input.nextInt();
    System.out.println("Thank you, can you please input your predictive grade for Assignment 1B?");
    oneB=input.nextInt();
    System.out.println("Finally, can you please input your predictive grade for Assignment 1C?");
    oneC=input.nextInt();
    average=(oneA+oneB+oneC)/3;
    System.out.println("Excellent, Thank you. The program has calculated your average grade to be "+average+"%");
    finA=(oneA/100)*25;
    finB=(oneB/100)*25;
    finC=(oneC/100)*50;
    System.out.println("This module states:\n Assignment 1A is weighted at 25%. You achieved "+finA+"%\n Assignment 1B is weighted at 25%. You achieved "+finB+"%\n Assignment 1C is weighted at 50%. You achieved "+finC+"%");
    }       
}

输出:

--------------------Configuration: newfile - JDK version 1.7.0_45  - --------------------

Hello, Welcome to the 'Calculate Your Grades' program!
Please input your predicted grade for Assignment 1A in a percentage format:
60
Thank you, can you please input your predictive grade for Assignment 1B?
60
Finally, can you please input your predictive grade for Assignment 1C?
60
Excellent, Thank you. The program has calculated your average grade to be 60.0%
This module states:
Assignment 1A is weighted at 25%. You achieved 0.0%
Assignment 1B is weighted at 25%. You achieved 0.0%
Assignment 1C is weighted at 50%. You achieved 0.0%

流程已完成.

构建报告很清楚.