java how to make a variable code example

Example 1: declare variables java

/* Depending on what variables you want to declare */
String hello = "hello"; //characters
short one = 12;//shorter integers
int two = 2000; //complete integer up too 32 bits
long number = 2000000; //complete integer up to 64 bits
float decimal = 1.512 //up to 7 decimal digits
double million = 1.387892847395 //up tp 16 decmial digits
Bool condition = true; // true or false
char a = "a"; // unicode character

Example 2: Variables in java

// static variable in java example
public class StaticVariableExample
{
   // static variable
   static int a = 0;
   public void add()
   {
      a++;
   }
   public static void main(String[] args)
   {
      StaticVariableExample obj1 = new StaticVariableExample();
      StaticVariableExample obj2 = new StaticVariableExample();
      obj1.add();
      obj2.add();
      // both objects are sharing same copy of static variable
      System.out.println("Object 1 value is: " + a);
      System.out.println("Object 2 value is: " + a);
   }
}

Example 3: java decler variabel

creating first grapper

float simpleInterest; //Declaring float variable
int time = 10, speed = 20; //Declaring and Initializing integer variable
char var = 'h'; // Declaring and Initializing character variable