package java.lang; import ej.annotation.Nullable; /** * The {@code Byte} class wraps a value of primitive type {@code byte} in an object. An object of * type {@code Byte} contains a single field whose type is {@code byte}. * *

* In addition, this class provides several methods for converting a {@code byte} to a * {@code String} and a {@code String} to a {@code byte}, as well as other constants and methods * useful when dealing with a {@code byte}. * * @see java.lang.Number */ public final class Byte extends Number implements Comparable { /** * A constant holding the maximum value a {@code byte} can have, 27-1. */ public static final byte MAX_VALUE = 127; /** * A constant holding the minimum value a {@code byte} can have, -27. */ public static final byte MIN_VALUE = -128; /** * The number of bits used to represent a {@code byte} value in two's complement binary form. */ public static final int SIZE = 8; /** * Constructs a newly allocated {@code Byte} object that represents the specified {@code byte} * value. * * @param value * the value to be represented by the {@code Byte}. */ public Byte(byte value) { throw new RuntimeException(); } /** * Constructs a newly allocated {@code Byte} object that represents the {@code byte} value indicated * by the {@code String} parameter. The string is converted to a {@code byte} value in exactly the * manner used by the {@code parseByte} method for radix 10. * *

* Null Analysis restriction: the parameter s is {@code @NonNull}, * to ensure that {@link NumberFormatException} is thrown only when the string * characters do not represent a valid number. This aligns with the behavior of * {@link Float#parseFloat(String)} and {@link Double#parseDouble(String)}. * * @param s * the {@code String} to be converted to a {@code Byte} * @throws NumberFormatException * If the {@code String} does not contain a parsable {@code byte}. * @see java.lang.Byte#parseByte(java.lang.String, int) */ public Byte(String s) throws NumberFormatException { throw new RuntimeException(); } /** * Compares two {@code byte} values numerically. The value returned is identical to what would be * returned by: * * 

     * Byte.valueOf(x).compareTo(Byte.valueOf(y))
     *
* * @param x * the first {@code byte} to compare * @param y * the second {@code byte} to compare * @return the value {@code 0} if {@code x == y}; a value less than {@code 0} if {@code x < y}; and * a value greater than {@code 0} if {@code x > y} */ public static int compare(byte x, byte y) { throw new RuntimeException(); } /** * Decodes a {@code String} into a {@code Byte}. Accepts decimal, hexadecimal, and octal numbers * given by the following grammar: * *
*
*
DecodableString: *
Signopt DecimalNumeral *
Signopt {@code 0x} HexDigits *
Signopt {@code 0X} HexDigits *
Signopt {@code #} HexDigits *
Signopt {@code 0} OctalDigits *
Sign: *
{@code -} *
{@code +} *
*
* * DecimalNumeral, HexDigits, and OctalDigits are as defined in section 3.10.1 * of The Java™ Language Specification, except that underscores are not accepted * between digits. * *

* The sequence of characters following an optional sign and/or radix specifier ("{@code 0x}", " * {@code 0X}", "{@code #}", or leading zero) is parsed as by the {@code Byte.parseByte} method with * the indicated radix (10, 16, or 8). This sequence of characters must represent a positive value * or a {@link NumberFormatException} will be thrown. The result is negated if first character of * the specified {@code String} is the minus sign. No whitespace characters are permitted in the * {@code String}. * * @param nm * the {@code String} to decode. * @return a {@code Byte} object holding the {@code byte} value represented by {@code nm} * @throws NumberFormatException * if the {@code String} does not contain a parsable {@code byte}. * @see java.lang.Byte#parseByte(java.lang.String, int) */ public static Byte decode(String nm) throws NumberFormatException { throw new RuntimeException(); } /** * Parses the string argument as a signed decimal {@code byte}. The characters in the string must * all be decimal digits, except that the first character may be an ASCII minus sign {@code '-'} * ('\u002D') to indicate a negative value or an ASCII plus sign {@code '+'} * ('\u002B') to indicate a positive value. The resulting {@code byte} value is * returned, exactly as if the argument and the radix 10 were given as arguments to the * {@link #parseByte(java.lang.String, int)} method. * *

* Null Analysis restriction: the parameter s is {@code @NonNull}, * to ensure that {@link NumberFormatException} is thrown only when the string * characters do not represent a valid number. This aligns with the behavior of * {@link Float#parseFloat(String)} and {@link Double#parseDouble(String)}. * * @param s * a {@code String} containing the {@code byte} representation to be parsed * @return the {@code byte} value represented by the argument in decimal * @throws NumberFormatException * if the string does not contain a parsable {@code byte}. */ public static byte parseByte(String s) throws NumberFormatException { throw new RuntimeException(); } /** * Parses the string argument as a signed {@code byte} in the radix specified by * the second argument. The characters in the string must all be digits, of the * specified radix (as determined by whether * {@link java.lang.Character#digit(char, int)} returns a nonnegative value) * except that the first character may be an ASCII minus sign {@code '-'} ( * '\u002D') to indicate a negative value or an ASCII plus sign * {@code '+'} ( '\u002B') to indicate a positive value. The * resulting {@code byte} value is returned. * *

* An exception of type {@code NumberFormatException} is thrown if any of the * following situations occurs: *

* *

* Null Analysis restriction: the parameter s is {@code @NonNull}, * to ensure that {@link NumberFormatException} is thrown only when the string * characters do not represent a valid number. This aligns with the behavior of * {@link Float#parseFloat(String)} and {@link Double#parseDouble(String)}. * * @param s the {@code String} containing the {@code byte} representation to * be parsed * @param radix the radix to be used while parsing {@code s} * @return the {@code byte} value represented by the string argument in the * specified radix * @throws NumberFormatException If the string does not contain a parsable * {@code byte}. */ public static byte parseByte(String s, int radix) throws NumberFormatException { throw new RuntimeException(); } /** * Returns a new {@code String} object representing the specified {@code byte}. The radix is assumed * to be 10. * * @param b * the {@code byte} to be converted * @return the string representation of the specified {@code byte} * @see java.lang.Integer#toString(int) */ public static String toString(byte b) { throw new RuntimeException(); } /** * Returns a {@code Byte} instance representing the specified {@code byte} value. If a new * {@code Byte} instance is not required, this method should generally be used in preference to the * constructor {@link #Byte(byte)}, as this method is likely to yield significantly better space and * time performance since all byte values are cached. * * @param b * a byte value. * @return a {@code Byte} instance representing {@code b}. */ public static Byte valueOf(byte b) { throw new RuntimeException(); } /** * Returns a {@code Byte} object holding the value given by the specified {@code String}. The * argument is interpreted as representing a signed decimal {@code byte}, exactly as if the argument * were given to the {@link #parseByte(java.lang.String)} method. The result is a {@code Byte} * object that represents the {@code byte} value specified by the string. * *

* In other words, this method returns a {@code Byte} object equal to the value of: * *

{@code new Byte(Byte.parseByte(s))}
* *

* Null Analysis restriction: the parameter s is {@code @NonNull}, * to ensure that {@link NumberFormatException} is thrown only when the string * characters do not represent a valid number. This aligns with the behavior of * {@link Float#parseFloat(String)} and {@link Double#parseDouble(String)}. * * @param s * the string to be parsed * @return a {@code Byte} object holding the value represented by the string argument * @throws NumberFormatException * If the {@code String} does not contain a parsable {@code byte}. */ public static Byte valueOf(String s) throws NumberFormatException { throw new RuntimeException(); } /** * Returns a {@code Byte} object holding the value extracted from the specified {@code String} when * parsed with the radix given by the second argument. The first argument is interpreted as * representing a signed {@code byte} in the radix specified by the second argument, exactly as if * the argument were given to the {@link #parseByte(java.lang.String, int)} method. The result is a * {@code Byte} object that represents the {@code byte} value specified by the string. * *

* In other words, this method returns a {@code Byte} object equal to the value of: * *

{@code new Byte(Byte.parseByte(s, radix))}
* *

* Null Analysis restriction: the parameter s is {@code @NonNull}, * to ensure that {@link NumberFormatException} is thrown only when the string * characters do not represent a valid number. This aligns with the behavior of * {@link Float#parseFloat(String)} and {@link Double#parseDouble(String)}. * * @param s * the string to be parsed * @param radix * the radix to be used in interpreting {@code s} * @return a {@code Byte} object holding the value represented by the string argument in the * specified radix. * @throws NumberFormatException * If the {@code String} does not contain a parsable {@code byte}. */ public static Byte valueOf(String s, int radix) throws NumberFormatException { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as a {@code byte}. */ @Override public byte byteValue() { throw new RuntimeException(); } /** * Compares two {@code Byte} objects numerically. * * @param anotherByte * the {@code Byte} to be compared. * @return the value {@code 0} if this {@code Byte} is equal to the argument {@code Byte}; a value * less than {@code 0} if this {@code Byte} is numerically less than the argument * {@code Byte}; and a value greater than {@code 0} if this {@code Byte} is numerically * greater than the argument {@code Byte} (signed comparison). */ @Override public int compareTo(Byte anotherByte) { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as a {@code double}. */ @Override public double doubleValue() { throw new RuntimeException(); } /** * Compares this object to the specified object. The result is {@code true} if and only if the * argument is not {@code null} and is a {@code Byte} object that contains the same {@code byte} * value as this object. * * @param obj * the object to compare with * @return {@code true} if the objects are the same; {@code false} otherwise. */ @Override public boolean equals(@Nullable Object obj) { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as a {@code float}. */ @Override public float floatValue() { throw new RuntimeException(); } /** * Returns a hash code for this {@code Byte}; equal to the result of invoking {@code intValue()} . * * @return a hash code value for this {@code Byte} */ @Override public int hashCode() { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as an {@code int}. */ @Override public int intValue() { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as a {@code long}. */ @Override public long longValue() { throw new RuntimeException(); } /** * Returns the value of this {@code Byte} as a {@code short}. */ @Override public short shortValue() { throw new RuntimeException(); } /** * Returns a {@code String} object representing this {@code Byte}'s value. The value is converted to * signed decimal representation and returned as a string, exactly as if the {@code byte} value were * given as an argument to the {@link java.lang.Byte#toString(byte)} method. * * @return a string representation of the value of this object in base 10. */ @Override public String toString() { throw new RuntimeException(); } }