/*
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 * and open the template in the editor.
 */
package com.spec;

import com.spec.model.Student;

/**
 *
 * @author Admin
 */
public class Test3 {
    //
    public static void doSomething(Object o){
        System.out.println("o.toString=" + o.toString());
        //
        if(o instanceof Student){
            System.out.println("=" + ((Student)o).getInstituteCode());
        }
    }
    //
    public static void main(String[] args) {
        //
        Object o = null;
        Object o1 = "asfasfasf";
        int[] arr = {1, 2, 3};
        Object o2 = arr;
        Object o3 = 10;
        //
        Object o4 = new Student("Nick", 10);
        System.out.println("o4.toString()=" + o4.toString());
        //
        boolean res = o4.equals(o3); // true - объекты равны, false - объекты не равны
        System.out.println("res=" + res);
        //
        String s2 = "HELLO";
        String s3 = "HELLO";
        // сравнение строк
        if(s2.equals(s3)){
            System.out.println("s2 == s3");
        }else{
            System.out.println("s2 != s3");
        }
        //
        Object k = new Student("Nick", 10);
        if(k instanceof Student){
            System.out.println("k экземпляр Student!!!");
        }
        if(k instanceof Object){
            System.out.println("k экземпляр Object!!!");
        }

        doSomething(new Student("Nick", 10));
        doSomething("Nick");
        doSomething(new int[]{1,2});
    }
}