7088952: Add size in bytes constant "BYTES" to primitive type wrapper types

Adds a constant BYTES to each of the primitive wrapper classes (Byte, Character, Double, Float, Integer, Long, Short) with the calculation Primitive.SIZE / Byte.SIZE already made.

Reviewed-by: dholmes

jdk/src/share/classes/java/lang/Byte.java

@@ -507,6 +507,14 @@ public final class Byte extends Number implements Comparable<Byte> {
      */
     public static final int SIZE = 8;
 
+    /**
+     * The number of bytes used to represent a {@code byte} value in two's
+     * complement binary form.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /** use serialVersionUID from JDK 1.1. for interoperability */
     private static final long serialVersionUID = -7183698231559129828L;
 }

jdk/src/share/classes/java/lang/Character.java

@@ -7170,6 +7170,14 @@ class Character implements java.io.Serializable, Comparable<Character> {
      */
     public static final int SIZE = 16;
 
+    /**
+     * The number of bytes used to represent a {@code char} value in unsigned
+     * binary form.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * Returns the value obtained by reversing the order of the bytes in the
      * specified <tt>char</tt> value.

jdk/src/share/classes/java/lang/Double.java

@@ -122,6 +122,13 @@ public final class Double extends Number implements Comparable<Double> {
      */
     public static final int SIZE = 64;
 
+    /**
+     * The number of bytes used to represent a {@code double} value.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * The {@code Class} instance representing the primitive type
      * {@code double}.

jdk/src/share/classes/java/lang/Float.java

@@ -120,6 +120,13 @@ public final class Float extends Number implements Comparable<Float> {
      */
     public static final int SIZE = 32;
 
+    /**
+     * The number of bytes used to represent a {@code float} value.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * The {@code Class} instance representing the primitive type
      * {@code float}.

jdk/src/share/classes/java/lang/Integer.java

@@ -1297,6 +1297,14 @@ public final class Integer extends Number implements Comparable<Integer> {
      */
     public static final int SIZE = 32;
 
+    /**
+     * The number of bytes used to represent a {@code int} value in two's
+     * complement binary form.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * Returns an {@code int} value with at most a single one-bit, in the
      * position of the highest-order ("leftmost") one-bit in the specified

jdk/src/share/classes/java/lang/Long.java

@@ -1319,6 +1319,14 @@ public final class Long extends Number implements Comparable<Long> {
      */
     public static final int SIZE = 64;
 
+    /**
+     * The number of bytes used to represent a {@code long} value in two's
+     * complement binary form.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * Returns a {@code long} value with at most a single one-bit, in the
      * position of the highest-order ("leftmost") one-bit in the specified

jdk/src/share/classes/java/lang/Short.java

@@ -470,6 +470,14 @@ public final class Short extends Number implements Comparable<Short> {
      */
     public static final int SIZE = 16;
 
+    /**
+     * The number of bytes used to represent a {@code short} value in two's
+     * complement binary form.
+     *
+     * @since 1.8
+     */
+    public static final int BYTES = SIZE / Byte.SIZE;
+
     /**
      * Returns the value obtained by reversing the order of the bytes in the
      * two's complement representation of the specified {@code short} value.