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

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());

怎么了？

Answer 1

我猜你的 getAge() 方法返回一个 int。所以尝试将 myAge.getAge() 解析为字符串，例如：

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