boolean java lang ByteBuffer (Java SE 11 & JDK 11 )

boolean java lang ByteBuffer (Java SE 11 & JDK 11 )

Byte can be by , which space for the ‘, or by an byte array into a .

vs. non-

A byte is or non-. Given a byte , the Java will make a best to I/O upon it. That is,it will to avoid the ‘s to (or from) an (or after) each of one of the ‘s I/O .

A byte may be by the of this class. The by this have and costs than non- . The of may of the – heapboolean java lang ByteBuffer (Java SE 11 & JDK 11 ), and so their upon the of an might not be . It is that be for large,long-lived that are to the ‘s I/O . In it is best to only when they yield a gain in .

A byte may also be by a of a file into . An of the Java may the of byte from code via JNI. If an of one of these kinds of to an of then an to that will not the ‘s and will cause an to be at the time of the or at some later time.

a byte is or non- may be by its . This is so that can be done in – code.

to data

This class for and of all other types, . are to (or from) of bytes to the ‘s byte order, which may be and via the . byte are by of the class. The order of a byte is .

For to data,that isboolean java lang ByteBuffer (Java SE 11 & JDK 11 ), of of types, this class a of and get and put for each type. For 32-bit -point , for , this class :

 float  getFloat()
 float  getFloat(int index)
  void  putFloat(float f)
  void  putFloat(int index, float f)

are for the types char, short, int, long,and . The index of the get and put are in terms of bytes than of the type being read or .

For to databoolean java lang, that is, of of the same type, this class that can views of a given byte . A view is whose is by the byte . to the byte ‘s will be in the view , and vice versa; the two ‘ , limit, and mark are . The , for , an of the class that is by the byte upon which the is . view- are for the types char, short, int,longboolean java lang, and .

View have three over the of type- get and put above:

The byte order of a view is fixed to be that of its byte at the time that the view is .

in this class that do not have a value to are to the upon which they are . This to be .The of

 bb.putInt(0xCAFEBABE);
 bb.putShort(3);
 bb.putShort(45);

can,forboolean java lang, be by the

 bb.putInt(0xCAFEBABE).putShort(3).putShort(45);