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  1. import java.io.*;
  2. import java.util.*;
  3. public class Person {
  4.     private int age;	
  5.     private int x;
  6.     private int u;
  7. 	public Person(int age) {
  8.         if(age<0){
  9.                      System.out.println("Age is not valid, setting age to 0.");
  10.       age=0;
  11.                u=age;
  12.         }
  13.         else if(age>0)
  14.             u=age;
  15.   		// Add some more code to run some checks on initialAge
  16. 	}
  17.  
  18. 	public void amIOld() {
  19.  
  20.  
  21.              if(u>=18)
  22.                       System.out.println("You are old.");
  23.         if(u<13)  
  24.                      System.out.println("You are young.");
  25.         if(u>=13 && u<18)
  26.                       System.out.println("You are a teenager.");
  27.  
  28.   		// Write code determining if this person's age is old and print the correct statement:
  29.  
  30. 	}
  31.  
  32. 	public void yearPasses() {
  33.         u=u+1;
  34.   		// Increment this person's age.
  35. 	}
  36. public static void main(String[] args) {
  37. 		Scanner sc = new Scanner(System.in);
  38. 		int T = sc.nextInt();
  39. 		for (int i = 0; i < T; i++) {
  40. 			int age = sc.nextInt();
  41. 			Person p = new Person(age);
  42. 			p.amIOld();
  43. 			for (int j = 0; j < 3; j++) {
  44. 				p.yearPasses();
  45. 			}
  46. 			p.amIOld();
  47. 			System.out.println();
  48.         }
  49. 		sc.close();
  50.     }
  51. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:3: error: class Person is public, should be declared in a file named Person.java
public class Person {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/Nef6w0
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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