static Java code example

Example 1: static in java

//Java Program to get the cube of a given number using the static method  
using static before a method or variable we can access it by not creating a 
instance of it.in the program we directly used student.cube(5)
class Calculate{  
  static int cube(int x){  
  return x*x*x;  
  }  
  
  public static void main(String args[]){  
  int result=Calculate.cube(5);  
  System.out.println(result);  
  }  
}

Example 2: static keyword in java

Static keyword is used a lot in java. 
 Static means, you
can access those static variables
without creating an object,
just by using a class name.
This means that only one instance of
that static member is created which
is shared across all instances of the class.
Basically we use static keyword when
all members share same instance.

Example 3: why we use static in java

In Java, static keyword is mainly used for memory management.
It can be used with variables, methods, blocks and nested classes.
It is a keyword which is used to share the same variable or method of a given
class. Basically, static is used for a constant variable or a method
that is same for every instance of a class

Example 4: static 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();
   }
}

Example 5: 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();
   }
}

Example 6: static keyword in java

// example on static block in java.
public class StaticBlockExample
{
   // static variable
   static int a = 10;
   static int b;
   // static block
   static
   {
      System.out.println("Static block called.");
      b = a * 5;
   }
   public static void main(String[] args)
   {
      System.out.println("In main method");
      System.out.println("Value of a : " + a);
      System.out.println("Value of b : " + b);
   }
}