We would like to know how to store and read an int/long/float/double via ByteBuffer.
import java.nio.ByteBuffer; /*ww w. jav a2 s . com*/ public class Main { private static final int BSIZE = 1024; public static void main(String[] args) { ByteBuffer bb = ByteBuffer.allocate(BSIZE); bb.asIntBuffer().put(99471142); System.out.println(bb.getInt()); bb = ByteBuffer.allocate(BSIZE); bb.asLongBuffer().put(99472342341142L); System.out.println(bb.getLong()); bb = ByteBuffer.allocate(BSIZE); bb.asFloatBuffer().put(99471142); System.out.println(bb.getFloat()); bb = ByteBuffer.allocate(BSIZE); bb.asDoubleBuffer().put(99471142); System.out.println(bb.getDouble()); } }
The code above generates the following result.