what are variables in java 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
// instance variable in java example
public class InstanceVariableDemo
{
// instance variable declared inside the class and outside the method
int c;
public void subtract()
{
int x = 100;
int y = 50;
c = x - y;
System.out.println("Subtraction: " + c);
}
public void multiply()
{
int m = 10;
int n = 5;
c = m * n;
System.out.println("Multiplication: " + c);
}
public static void main(String[] args)
{
InstanceVariableDemo obj = new InstanceVariableDemo();
obj.subtract();
obj.multiply();
}
}
Example 3: java variables
/*
## Variable
- Container which holds the value while the Java program is executed.
- Assigned with a data type.
- Name of memory location.
## There are three types of variables in java:
1) Local variable
2) Static (or class) variable
3) Instance variable
*/
Example 4: how to create a variable java
int myVariable = 42; //This is the most commonly used variable. Only use other variables if you have a good reason to.