PrintStream类型中的printf（String，Object []）方法不适用于参数（String）

Question

package age;

import java.util.Scanner;

public class AgeTest 
{
  public static void main(String[] args)
  {
    Scanner input = new Scanner(System.in);

    Age myAge = new Age();

    System.out.printf("initial age is :%s%n%n"+ myAge.getAge());

    System.out.println("PLEASE ENTER THE AGE");
    int theAge = input.nextInt(); 
    myAge.setAge(theAge);
    System.out.println();
    // display the name stored in object myAge
    System.out.printf("age in object myAge is %n%s%n"+ myAge.getAge());

有什么问题？

Answer 1

我猜你的getAge（）方法返回一个int。因此，尝试将myAge.getAge（）解析为String，如：

String age = Integer.toString(myAge.getAge())  System.out.print("Age is: " + age );