Learn Java Constructor Types | EasyTechCode

Published: 18 May 2022
on channel: BetaCode

#javaforbeginners #java #javatutorial #ConstructorTypes #javaprogramming #javabasics #onlineclassCS #ConstructorInJava
Types of Constructor:
The Default Constructor has no argument to pass. It initialize the class variable with default value.
Class add
{
int a, b;
add()
{
a=7,b=10;
}
}
Class sample{
public static void main(String args[])
{
add obj = new add(); // obj.a=7 & obj.b=10
}
}
Type 2: Parameter Constructor:
Constructor has parameter to initialize the class variable.
Class add
{
int a, b;
add(int x, int y)
{
a=x;
b=y;
}
}
Class sample{
public static void main(String args[])
{
add obj = new add(9,11); // obj.a=9 & obj.b=11
}
}
Copy Constructor:
Constructor passed with class object,
Class add
{
int a, b;
add()
{
a=7,b=10;
}
add( add cpy)
{
a=cpy.a;
B=cpy.b;
}
}
Class sample{
public static void main(String args[])
{
add obj1 = new add(); // obj1.a=7 & obj1.b=10
add obj2 = new add(obj1); // obj2.a=7 & obj2.b=10
} }
#Constructor
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