java-casting-map

Its an easy MAP to illiterate, how to cast a java primitive data type to another one by examples
Supported Java Primitive Data Types
byte, short, int, long, float, double, boolean, char in addition to String.
You can click on any cell of below table map to show the code example.

Casting Map

From=>To	byte	short	int	long	float	double	boolean	char	String
byte	-	By Default	By Default	By Default	By Default	By Default	INVALID	(char) byteVar; //ASCII_Char	String.valueOf(byteVar); or Byte.toString(byteVar); or By Concatenation
short	(byte) shortVar;	-	By Default	By Default	By Default	By Default	INVALID	(char) shortVar; //ASCII_Char	String.valueOf(shortVar); or Short.toString(shortVar); or By Concatenation
int	(byte) intVar;	(short) intVar;	-	By Default	By Default	By Default	INVALID	(char) intVar; //ASCII_Char	String.valueOf(intVar); or Integer.toString(intVar); or By Concatenation
long	(byte) longVar;	(short) longVar;	(int) longVar;	-	By Default	By Default	INVALID	(char) longVar; //ASCII_Char	String.valueOf(longVar); or Long.toString(longVar); or By Concatenation
float	(byte) floatVar;	(short) floatVar;	(int) floatVar;	(long) floatVar;	-	By Default	INVALID	(char) floatVar; //ASCII_Char	String.valueOf(floatVar); or Float.toString(floatVar); or By Concatenation
double	(byte) doubleVar;	(short) doubleVar;	(int) doubleVar;	(long) doubleVar;	(float) doubleVar;	-	INVALID	(char) doubleVar; //ASCII_Char	String.valueOf(doubleVar); or Double.toString(doubleVar); or By Concatenation
boolean	INVALID	INVALID	INVALID	INVALID	INVALID	INVALID	-	INVALID	String.valueOf(booleanVar); or Boolean.toString(booleanVar); or By Concatenation
char	(byte) charVar; //ASCII_Number or (byte) (charDigitVar-'0'); //Digit_Number	(short) charVar; //ASCII_Number or (short) (charDigitVar-'0'); //Digit_Number	By Default //ASCII_Number or (charDigitVar-'0'); //Digit_Number	By Default //ASCII_Number or (charDigitVar-'0'); //Digit_Number	By Default //ASCII_Number or (charDigitVar-'0'); //Digit_Number	By Default //ASCII_Number or (charDigitVar-'0'); //Digit_Number	INVALID	-	String.valueOf(charVar); or Char.toString(charVar); or By Concatenation
String	Byte.parseByte(stringVar);	Short.parseShort(stringVar);	Integer.parseInt(stringVar);	Long.parseLong(stringVar);	Float.parseFloat(stringVar);	Double.parseDouble(stringVar);	Boolean.parseBoolean(stringVar);	stringVar.charAt(index);	-

Primitive Data Types - Values Range

-		size	Internal Implementation	Default Value	Minimum value	Maximum value
byte		8 bit (1 byte)	Two's complement integer.	0	-128	127	2^7
short		16 bit (2 bytes)	Two's complement integer.	0	-32,768	32,767	2^15
int		32 bit (4 bytes)	Two's complement integer.	0	-2,147,483,648	2,147,483,647	2^31
long		64 bit (8 bytes)	Two's complement integer.	0L 0l	-9,223,372,036,854,770,000	9,223,372,036,854,770,000	2^63
float		32 bit (4 bytes)	Single-precision 32-bit/IEEE 754 floating point.	0.0F 0.0f	1.4E-45	3.4028235E38
double		64 bit (8 bytes)	Double-precision 64-bit/IEEE 754 floating point.	0.0D 0.0d	4.9E-324	1.7976931348623157E308
boolean		VM dependent	VM dependent, to store either true of false	false
char		16 bit (2 bytes)	Single 16-bit Unicode character.	'\u0000'	\u0000' (or 0)	\uffff' (or 65,535)
String				null