使用扫描仪在构造函数中调用 set 方法

Question

I am trying to invoke a set method in a constructor that accepts user input to instantiate an object. A sample of a set method is as follows:

public void setName(String name) {
    if(name.length()>0 && name.length()<25) {
        this.name = name;
    }
    else {System.out.println("Name length can not exceed 25 characters.");}
}

I then want to accept the user input to instantiate the object. I currently have it formatted like so:

public Character(String name){ name = setName(input.nextLine());}

I have imported the scanner and created a scanner object. The character constructor itself is actually quite large, it consists of 29 variables, each of which have a set method similar to the first code sample.

My ultimate goal is to put this in a GUI form for a person to fill out. The error Eclipse gives for my current syntax is "type mismatch, cannot convert from void to String".

How is this supposed to be done?

Answer 1

The easiest approach is to modify your code like this:

public String setName(String name) {
    if(name.length()>0 && name.length()<25) {
        this.name = name;
    }
    else {System.out.println("Name length can not exceed 25 characters.");}
    return name;
}