static and final in java
The two really aren't similar.
"STATIC" fields are fields that do not
belong to any particular instance of a class.
and there is only one copy of the variable in memory
shared by all instances of the class.
On the other hand
"FINAL" The final keyword just means the value
can't be changed. Without final, any object can
change the value of the variablestatic keyword in java
// example on static method in java.
public class StaticMethodExample
{
static void print()
{
System.out.println("in static method.");
}
public static void main(String[] args)
{
StaticMethodExample.print();
}
}static keyword in java
// example on static variable in java.
class EmployeeDetails
{
// instance variable
int empID;
String empName;
// static variable
static String company = "FlowerBrackets";
// EmployeeDetails constructor
EmployeeDetails(int ID, String name)
{
empID = ID;
empName = name;
}
void print()
{
System.out.println(empID + " " + empName + " " + company);
}
}
public class StaticVariableJava
{
public static void main(String[] args)
{
EmployeeDetails obj1 = new EmployeeDetails(230, "Virat");
EmployeeDetails obj2 = new EmployeeDetails(231, "Rohit");
obj1.print();
obj2.print();
}
}final vs static keyword in java
The two really aren't similar.
"STATIC" fields are fields that do not
belong to any particular instance of a class.
and there is only one copy of the variable in memory
shared by all instances of the class.
On the other hand
"FINAL" The final keyword just means the value
can't be changed. Without final, any object can
change the value of the variableFinal keyword java
public class Main {
final int x = 10;
public static void main(String[] args) {
Main myObj = new Main();
myObj.x = 25; // will generate an error: cannot assign a value to a final variable
System.out.println(myObj.x);
}
}Copyright © 2021 Codeinu
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