Java代码for循环太多，解决方式

如何解决java代码for循环太多呢？这样写

public class forhu {
 public static void main(String[] args){
 
     List<Student> stus = new ArrayList<>();
      
     for (int i = 0 ; i < stus.size() ; i++ ) {
         Student stu = stus.get(i);
         Integer value = gradesMap.get(stu.getId());
         if( null != value ) {
         	System.out.println( "学生：" + stu.getName() + "，成绩：" + value );
		 }
	 }
  }
}