#43 Constructor in Java

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In this lecture we will see:
- What are constructors in Java/
- Properties and use of a constructor
- Syntax of a constructor

#1
- When you create an object then in the heap memory, it will just create a blank object.
- If you do not assign values than the default values will be assigned like:
0 for int,
NULL for string
- We can also define values at the time of the creation of an object by giving our default values.

#2
Properties of a constructor:
- Constructor is almost similar to a method it has a name and it also has round brackets.
- The change in the constructor with respect to the method is that in the constructor we do not specify the return type.
- The name of a constructor must be the same as the class name.
- There is no need to call a constructor. It gets called automatically at the time of the creation of an object.
- At the time of calling the constructor, memory for the object is allocated in the memory.
- Constructors are called only once at the time of object creation. While method(s) can be called any number of times.

#3
Syntax of a constructor:
class human {
public Human()
{
statements;
}
}

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[parthasarathikrishnamoorth]

create a individual program for individual conepts don't be continue with the same program, why mean it collapsing for beginners..

[Harshithkatukam]

constructors can not only be public, they can be public, private, protected and default too .
private constructors are used in singleton design pattern and in utility classes (like Math) also

[raghasudha]

not for the begineers...I have seen all his concepts but bit difficukt for begineers to understand

[rithikvarshan]

Q1: Why constructor name and class name are same?
Q2: Why constructors doesn't have a return type?

[shubhanjaliverma-sn]

It was helpful while I was struggling to understand it from my book.

[_Radha_Krishna_]

If you want to learn constructor please refer the vedio of durga sir they itself not understand the core Java concept.

[Breakingbadtwd]

Why the age:12
Name: john
Not called 2 times when we have 2 objects?

[sridharmurari]

Sir, New keyword just creates a obj with default values right? then what is the role of default constructor ?

[JDMon]

Sir if second object is created then another constructor will called?

[Gamuss]

What about private constructors? How can I call it from my main class?

[puruagni]

Why are you not updating VS Code? Please update VS Code.

[bhagyashrik-hg]

Sir video for school students pl class9, 10

[roopagaur]

We can use methods for parameters then why to use constructor when we can do by method only, please need reply

[ForeverChip]

Am I having dyslexia or the comments are not properly organised

[shivamKumar-skjz]

Sout shortcut is not working in my ide

[divyanshrautela-qneb]

worst explaination i have seen on constructors