java - printf 方法不起作用

Question

这是我第二次尝试使用 PrintWriter#printf 方法，并且收到以下错误消息:

The method printf(String, Object[]) in the type PrintStream is not applicable for the argument (String, String)

我使用的代码有两个类。

这是第一个类:

class apples4 {
    public static void main(String[] args) {
    tuna4 tuna4Object = new tuna4("Kelsey");
        tuna4Object.saying();
    }
}

这是第二堂课:

public class tuna4 {
    private String girlName;

    public tuna4(String name) {
        girlName=name;
    }

    public void setName(String name) {
        girlName=name;  
    }

    public String getName() {
        return girlName;
    }

    public void saying(){
        System.out.printf("Your first girlfriend was %s\n", getName() );
    }
 }

Answer 1

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