8. General methods of packing class

/*** Packaging Class common methods **/ Public classDemo { Public Static  voidMain (string[] args) {//Xxxvalue (): wrapper class converted to basic typeInteger integerid=NewInteger (25); intIntid=Integerid.intvalue ();                System.out.println (INTID); Boolean Booleanval=NewBoolean (true); BooleanBool2=Booleanval.booleanvalue ();        System.out.println (bool2); System.out.println ("*************************"); //toString (): Returns the base type data represented by the wrapper object as a stringString sex=character.tostring (' Male '); String ID=integer.tostring (89);        SYSTEM.OUT.PRINTLN (Sex);        SYSTEM.OUT.PRINTLN (ID); String Sex2= ' Male ' + ' "; String Id2=89+ "";        System.out.println (SEX2);        System.out.println (ID2); System.out.println ("*************************"); //all wrapper classes valueof (type value)Integer Intvalue=integer.valueof (21);        System.out.println (Intvalue); Boolean BOOL=boolean.valueof (false);        SYSTEM.OUT.PRINTLN (BOOL); System.out.println ("*************************"); //In addition to the character class, other wrapper class valueof (String s)Intvalue=integer.valueof ("32"); //bool=boolean.valueof ("true");Bool=boolean.valueof ("Love"); //Compile Error//Character c=character.valueof ("a");System.out.println (intvalue);        SYSTEM.OUT.PRINTLN (BOOL); System.out.println ("*************************"); //parsexxx (): Converts a string to the corresponding base data type data (except character)        intI=integer.parseint ("89");        System.out.println (i); //Boolean Flag=boolean.parseboolean ("true"); //boolean Flag=boolean.parseboolean ("TRue"); //boolean Flag=boolean.parseboolean ("Love");        BooleanFlag=boolean.parseboolean ("false");        SYSTEM.OUT.PRINTLN (flag); System.out.println ("*************************"); //automatic conversion of basic types and wrapper classes: Boxing and unpacking//PackingInteger intobject=5; //Unpacking        intIntvalue2=Intobject; System.out.println (Intobject+ "\ T" +intValue2); }}

8. General methods of packing class