Java how to create an array / matrix of different objects

Question

I'm a little confused

I created a class called person, which has age and name attributes (and get the given methods). Then in another class I want to create an array of people, where each person has a different age and name. But some, like, after all, all my faces end with a surname and age. If I manually create them, that’s fine, but with the for loop I have this problem. What should I do to get different people?

Here is the human class code:

public class person {
static String name;
static int age;
public person() {
    name="name";
    age=0;
}
public static String getName() {
    return name;
}
public static void setName(String name) {
    person.name = name;
}
public static int getAge() {
    return age;
}
public static void setAge(int age) {
    person.age = age;
}

public static void main(String[] args) {
    // TODO Auto-generated method stub

}

}

And here is the code where I want to create my array / matrix:

  public class array {
 static person[][] a;

 public static void main(String[] args) {
  a=new person[3][3];


  //manual created person
  person first=new person();
  person second=new person();
  person third=new person();
  first.setAge(12);
  first.setName("first");
  second.setAge(20);
  second.setName("second");
  third.setAge(40);
  third.setName("third");


  //automatic (here I get the disired effect)
  for (int i = 0; i < a.length; i++) {
   for (int j = 0; j < a.length; j++) {
    a[i][j]=new person();
    a[i][j].setAge(10+j);
    a[i][j].setName("Alia"+i);
    System.out.println(i+" "+j+" "+a[i][j].getName()+" "+a[i][j].getAge());
   }
  }

//  a[0][0]=first;
//  a[0][1]=second;
//  a[1][2]=third;
//  System.out.println(a[0][0].getName()+" "+a[0][0].getAge());

  //for checking , and it doesnt work anymore
  System.out.println(a[0][0].getName()+" "+a[0][0].getAge());

//  for (int i = 0; i < a.length; i++) {
//   for (int j = 0; j < a.length; j++) {
//    System.out.println(i+" "+j+" "+a[i][j].getName()+" "+a[i][j].getAge());
//   }
//   
//  }
  getname();

 }

 private static void getname() {
  System.err.println("get name function");
  for (int i = 0; i < a.length; i++) {
   for (int j = 0; j < a.length; j++) {
    System.out.println(a[i][j].getName());
   }
  }

 }

}

Answer 1

static . , ( ).

:

public class Person {
    public final String name;
    public final int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String toString() {
        return name + " (" + age + ")";
    }

    public static void main(String... args) {
        List<Person> people = new LinkedList<Person>();
        people.add(new Person("David", 28));
        people.add(new Person("Andreas", 27));

        System.out.println(people);
    }
}

Answer 2

, . "" , , ​​ int. , , main(). Person() .

Answer 3

The problem is static fields. The last values ​​assigned to them will be reflected in the whole object.