Java methods are similar to functions or procedures in other
programming languages.

Every Java program must have one main() method.

Here is the main() method from a Java program which prints
"Hello World":

public static void main (String[] args) {
// This Java program prints "Hello World!"
System.out.println{"Hello World!");


A constructor creates an Object of the class that it is in
by initializing all the instance variables and creating a
place in memory to hold the Object. It is always used with
the keyword new and then the Class name. For instance, new
String(); constructs a new String object. 

COnstructors are basically used to initialize the attributes
of the class.

Java methods are similar to functions or procedures in other
programming languages.

Every Java program must have one main() method.

Here is the main() method from a Java program which prints
"Hello World":

public static void main (String[] args) {
// This Java program prints "Hello World!"
System.out.println{"Hello World!");


A constructor creates an Object of the class that it is in
by initializing all the instance variables and creating a
place in memory to hold the Object. It is always used with
the keyword new and then the Class name. For instance, new
String(); constructs a new String object. 

COnstructors are basically used to initialize the attributes
of the class.

A method is a procedure to call the objects with their properties within or outside the classes, method is considered in object oriented programming as functions in structured programming. 

constructor is a method used only for initializing the variables of the object class. this will reduce the code compatibility.