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public Person(int initialAge) {
// Add some more code to run some checks on initialAge
if(initialAge > 0){
age = initialAge;
}
else{
age = 0;
System.out.println("Age is not valid, setting age to 0.");
}
}
public void amIOld() {
// Write code determining if this person's age is old and print the correct statement:
if(age < 13){
System.out.println("You are young.");
}else if(age >=13 && age < 18){
System.out.println("You are a teenager.");
}else if(age >=18) {
System.out.println("You are old.");
}
}
public void yearPasses() {
// Increment this person's age.
age = age+1;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int T = sc.nextInt();
for (int i = 0; i < T; i++) {
int age = sc.nextInt();
Person p = new Person(age);
p.amIOld();
for (int j = 0; j < 3; j++) {
p.yearPasses();
}
p.amIOld();
System.out.println();
}
sc.close();
}
}
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Day 4: Class vs. Instance
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JAVA Solution
import java.io.; import java.util.;
public class Person { private int age;
}