java 求 两个数的百分比

public static void main(String[] args) {
    int num1 = 40;  
    int num2 = 50;  

    int sun = num1+num2;
    // 创建一个数值格式化对象  
    NumberFormat numberFormat = NumberFormat.getInstance();  
    // 设置精确到小数点后2位  
    numberFormat.setMaximumFractionDigits(2);  

    String result1 = numberFormat.format((float) num1 / (float) sun * 100);  
    String result2 = numberFormat.format((float) num2 / (float) sun * 100);  

    System.out.println("num1和num2的百分比为:" + result1 + "%");  
    System.out.println("num1和num2的百分比为:" + result2 + "%");  
  }