小编use*_*208的帖子

毫无疑问,我错过了一些非常明显的东西,但我无法弄明白.任何帮助,将不胜感激.错误来自这里:

package B00166353_Grades;

public class Student{
    String name,banner;

    public Student(String name,String banner){
        this.name=name;
        this.banner=banner;
    }

    public String toString(){
        String productDetails=new String();
        productDetails+=String.format("%-20s%10.2s%10s",this.name,this.banner);
        return productDetails;
    }
}

我目前正在开发一个包含多个学生对象的模块类,并且遇到了以下问题 -

一元运算符'+'的坏操作数类型字符串

我将不胜感激,我的代码如下.

public class Module {
private String moduleTitle;
int percentageCoursework;
int percentageExam;
private Student studentsList[] = new Student[3];

public Module (String moduleTitle, int percentageCoursework, int percentageExam,String     studentOne, String studentTwo, String studentThree, String studentsTitles[])
{        
this.moduleTitle = moduleTitle;
this.percentageCoursework = percentageCoursework;
this.percentageExam = percentageExam;
this.studentsList[0].name = studentOne;
this.studentsList[1].name = studentTwo;
this.studentsList[2].name = studentThree;

}
            public void ShowDetails()
{
    System.out.println("moduleTitle : " + moduleTitle + 
            "\n percentageCoursework : " + percentageCoursework + 
            "\n percentageExam : " + percentageExam + …