[IX] Boolean explanation of the underlying data type

The Boolean is very simple relative to the other underlying typeBoolean Basic Data Type Boolean wrapper classan object of type Boolean contains a Boolean type of field Introduction to Properties properties are also relatively simple

Class instance representing the base type Boolean	public static final class<boolean> TYPE = (class<boolean>) class.getprimitiveclass ("Boolean");
TRUE constant	public static Final Boolean true = new Boolean (true);
FALSE constant	public static Final Boolean false = New Boolean (false);

Construction Method As usual two forms ofBasic Type/parseboolean parsing

Boolean (Boolean value)
Boolean (String s)

comparison method

Compare (Boolean, Boolean)	Static Methods x=y equals 0 . x is true? 1 greater than 0 x is false?-1 less than 0
CompareTo (Boolean)	Instance method Call a static method to compare the values of two objects

  parsexxx Series string parsing is a basic type,no objects are required, so they are static methodsstring parsing is simple for Booleanbecause only true and false two kinds ofas long as the string equals True, then it is true otherwise, everything is false

Parseboolean (String)

valueof Series wrapping Basic Basic types as objectsused to create a Get object, so no objects are required, all static methodsvlueof Two forms, given that the Boolean itself is just two valuesso according to this value, or according to the Parseboolean valuereturns a built-in two object, TRUE FALSEThis can also be understood as a cache of two objects

Static Boolean valueOf (Boolean B)
Static Boolean valueOf (String s)

Xxxvalue Series gets the value of some basic type of objectneed to get the value of the object, so it must be all instance methodsBoolean only Booleanvalue () one formBecause Boolean cannot be strongly converted to another data type toString Series     

ToString (Boolean)	Static methods Converts directly to the corresponding string form, based on true or false
ToString ()	Instance method

equals

Overridden The Equals method The internal comparison is the value of the object

hashcode The boolean hashcode returns a fixed value

static int Hashcode (boolean value)	Two fixed value
int hashcode ()

  getxxx Series gets the value of the system property

Getboolean (String) Get system attribute-related data and convert to Boolean logical meaning with GETXXX series in other classes

  Other methods Boolean will naturally have related Boolean operationsfrom the source code can be seen, is directly and or non-operational

LogicalAnd (Boolean, Boolean)
Logicalor (Boolean, Boolean)
Logicalxor (Boolean, Boolean)

[IX] Boolean explanation of the underlying data type