JAVA

java int to double

// Primitive type
int myInt = 5;
double myDouble = (double)myInt;		// explicit cast
myDouble = myInt;						// implicit cast
// Object type
Double myDouble = new Double(myInt)		// via constructor
myDouble = Double.valueOf(myInt)		// via valueOf

int to double java

Double d= new Double(i);//first way  
Double d2=Double.valueOf(i);//second way  

int to double java

double d=i;