Java tutorial
public class Main { public static void main(String[] argv) throws Exception { Boolean refBoolean = new Boolean(true); boolean bool = refBoolean.booleanValue(); Byte refByte = new Byte((byte) 123); byte b = refByte.byteValue(); Character refChar = new Character('x'); char c = refChar.charValue(); Short refShort = new Short((short) 123); short s = refShort.shortValue(); Integer refInt = new Integer(123); int i = refInt.intValue(); Long refLong = new Long(123L); long l = refLong.longValue(); Float refFloat = new Float(12.3F); float f = refFloat.floatValue(); Double refDouble = new Double(12.3D); double d = refDouble.doubleValue(); } }