Thread: Casting and Data Type Conversion examples

Casting and Data Type Conversion examples

	String s = "56"; // no letters inside
	byte by = Byte.parseByte(s); //56
	short sh = Short.parseShort(s); //56	
	int i = Integer.parseInt(s); //56	
	Integer i = Integer.valueOf(s);
	long lo = Long.parseLong(s); //56		
	float f = Float.parseFloat(s); //56.0
	double d = Double.parseDouble(s); //56.0
	char c = s.charAt(0); //5
	boolean bo = Boolean.parseBoolean(s); //false

	byte by = 1; 
	short sh = 2; 
	int i = 3; 
	long lo = 4; 	
	float f = 5.6F; 
	double d = 66.8F;
	char c = 's';
	boolean bo = false;
 
	String s = by+""; // 1
	String s = Byte.toString(by);
	String s = String.valueOf(by); // (i) ,(sh), (d) etc
	String s = Short.toString(sh);
	String s = Integer.toString(i);	
	String s = Long.toString(lo);
	String s = Float.toString(f); // 5.6
	String s = Double.toString(d); // 66.80000305175781
	String s = Character.toString(c); // s
	String s = Boolean.toString(bo); // false

long x = (long)i;
float ff = (float)5;
double ff = (double)3.55;
char ff = (char)3.55;

What's the question? Or is this a tutorial?

Edit: Duh! I see I just woke up in the tutorial section. It might be helpful if you were to explain what the above examples do or show and how you think that might be helpful to someone else.

it is a tutorial, just summerized to learn by heart