// Declaration Statements
// ("preparing" variables to store values)

public class declaration {
    public static void main(String[] args) {
	
	// Need variables!
	// Example:
	// x; y=1;   // what happens?
	
	// - Java is strongly typed!
	// - must declare type of variable before using
	//   syntax: type var1, var2, .... ;
	int x;
	boolean a,b;

	// - cannot redeclare variable outside of 
	//   STATEMENT BLOCK: { statements; }
	{ double y; }
	{ char y; }   // no error! Why?
	double y;     // no error! Why?
	// { int y; } // causes error! Why?

	// CASTING: a way to "by pass" typing
	// syntax: (type) expr
	// $(type)$ forces the type of $expr$ 
	// to be $type$
	// types must be convertible! 
	// char <=> int <==> double
	
	// Example:
	System.out.println((int) 1.2);
	System.out.println((double)((int)((char)(32))));
	// System.out.println((int) true);
     }
}