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Java Constructors
- Rakesh
Java Constructor Basics
● A constructor initializes an object when it is created.
● It has the same name as its class.
● Constructors have no explicit return type.
● Java automatically provides a default constructor if there
is no explicit constructor.
Java Constructor Types - No Argument Constructor
● It doesn't accept any parameter.
● Syntax:
Public class TestClass {
Int num;
TestClass() {
num = 10;
}
}
Java Constructor Types - Parameterized Constructor
● It accepts parameters.
● Syntax:
class TestClass {
int x;
TestClass(int i) {
x = i;
}
}

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Java Constructors | Java Course

  • 2. Java Constructor Basics ● A constructor initializes an object when it is created. ● It has the same name as its class. ● Constructors have no explicit return type. ● Java automatically provides a default constructor if there is no explicit constructor.
  • 3. Java Constructor Types - No Argument Constructor ● It doesn't accept any parameter. ● Syntax: Public class TestClass { Int num; TestClass() { num = 10; } }
  • 4. Java Constructor Types - Parameterized Constructor ● It accepts parameters. ● Syntax: class TestClass { int x; TestClass(int i) { x = i; } }