JAVA EE: Java Tutorial : Java Object Class(toString method)

Wednesday, 3 February 2016

Java Tutorial : Java Object Class(toString method)

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https://www.youtube.com/watch?v=d6KJsZod0oM&list=UUhwKlOVR041tngjerWxVccw

Employee.java

public class Employee
{
    private String name;
    private int age;
    private int salary;

    public Employee(String name, int age, int salary)
    {
        super();
        this.name = name;
        this.age = age;
        this.salary = salary;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getAge()
    {
        return age;
    }

    public void setAge(int age)
    {
        this.age = age;
    }

    public int getSalary()
    {
        return salary;
    }

    public void setSalary(int salary)
    {
        this.salary = salary;
    }

    /*
     * Returns a string representation of the object,
     * which is very useful for debugging.
     *
     * In general, the toString method returns a string that
     * "textually represents" this object.
     *
     * The result should be a concise but informative
     * representation that is easy for a person to read. It
     * is recommended that all subclasses override this
     * method.
     */

    @Override
    public String toString()
    {
        System.out.println("toString() method is called.");
        return "Employee [name=" + name + ", age=" + age
                + ", salary=" + salary + ", getClass()="
                + getClass() + ", hashCode()=" + hashCode()
                + ", toString()=" + super.toString() + "]";
    }
}

ObjectClassTest.java

public class ObjectClassTest
{

    public static void main(String[] args)
    {
        Employee peterObj = new Employee("Peter", 34, 50000);
        System.out.println(peterObj);

    }

}

Output

toString() method is called.
Employee [name=Peter, age=34, salary=50000, getClass()=class Employee, hashCode()=2114664380, toString()=Employee@7e0b37bc]