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Java Source Code / Java Documentation » IDE Eclipse » swt » org.eclipse.swt.internal

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.eclipse.swt.internal .Compatibility

Compatibility

final public class Compatibility (Code)

This class is a placeholder for utility methods commonly used on J2SE platforms but not supported on some J2ME profiles.

It is part of our effort to provide support for both J2SE and J2ME platforms.

IMPORTANT: some of the methods have been modified from their J2SE parents. Refer to the description of each method for specific changes.

Exceptions thrown may differ since J2ME's set of exceptions is a subset of J2SE's one.
The range of the mathematic functions is subject to change.

Field Summary
public static double	PI Returns the PI constant as a double.
static double	toRadians

Method Summary
public static int	ceil(int p, int q) Answers the most negative (i.e.
public static int	cos(int angle, int length) Answers the length of the side adjacent to the given angle of a right triangle.
public static boolean	equalsIgnoreCase(String s1, String s2) Compares two instances of class String ignoring the case of the characters and answers if they are equal.
public static void	exec(String prog) Execute a program in a separate platform process if the underlying platform support this.
public static void	exec(String[] progArray) Execute progArray[0] in a separate platform process if the underlying platform support this.
public static int	floor(int p, int q) Answers the most positive (i.e.
public static String	getMessage(String key) Returns the NLS'ed message for the given argument.
public static String	getMessage(String key, Object[] args)
public static void	interrupt() Interrupt the current thread.
public static boolean	isLetter(char c) Answers whether the character is a letter.
public static boolean	isLetterOrDigit(char c) Answers whether the character is a letter or a digit.
public static boolean	isSpaceChar(char c) Answers whether the character is a Unicode space character.
public static boolean	isWhitespace(char c) Answers whether the character is a whitespace character.
public static OutputStream	newDeflaterOutputStream(OutputStream stream) Create an DeflaterOutputStream if such things are supported.
public static InputStream	newFileInputStream(String filename) Open a file if such things are supported.
public static OutputStream	newFileOutputStream(String filename) Open a file if such things are supported.
public static InputStream	newInflaterInputStream(InputStream stream) Create an InflaterInputStream if such things are supported.
public static int	pow2(int n) Returns 2 raised to the power of the argument.
public static int	round(int p, int q) Answers the result of rounding to the closest integer the number obtained by dividing the first argument p by the second argument q. IMPORTANT: the j2me version has an additional restriction on the arguments.
public static int	sin(int angle, int length) Answers the length of the side opposite to the given angle of a right triangle.

Field Detail

PI
public static double PI(Code)
	Returns the PI constant as a double.

toRadians
static double toRadians(Code)

Method Detail

ceil
public static int ceil(int p, int q)(Code)
	Answers the most negative (i.e. closest to negative infinity) integer value which is greater than the number obtained by dividing the first argument p by the second argument q. Parameters: p - numerator Parameters: q - denominator (must be different from zero) the ceiling of the rational number p / q.

cos
public static int cos(int angle, int length)(Code)
	Answers the length of the side adjacent to the given angle of a right triangle. In other words, it returns the integer conversion of length * cos (angle). IMPORTANT: the j2me version has an additional restriction on the argument. length must be between -32767 and 32767 (inclusive). Parameters: angle - the angle in degrees Parameters: length - the length of the triangle's hypotenuse the integer conversion of length * cos (angle)

equalsIgnoreCase
public static boolean equalsIgnoreCase(String s1, String s2)(Code)
	Compares two instances of class String ignoring the case of the characters and answers if they are equal. Parameters: s1 - string Parameters: s2 - string true if the two instances of class String are equal

exec
public static void exec(String prog) throws java.io.IOException(Code)
	Execute a program in a separate platform process if the underlying platform support this. The new process inherits the environment of the caller. Parameters: prog - the name of the program to execute exception: IOException - if the program cannot be executed exception: SecurityException - if the current SecurityManager disallows program execution

exec

public static void exec(String[] progArray) throws java.io.IOException(Code)

Execute progArray[0] in a separate platform process if the underlying platform support this.

The new process inherits the environment of the caller.

Parameters:
  progArray - array containing the program to execute and its arguments
exception:
  IOException - if the program cannot be executed
exception:
  SecurityException - if the current SecurityManager disallows program execution

floor
public static int floor(int p, int q)(Code)
	Answers the most positive (i.e. closest to positive infinity) integer value which is less than the number obtained by dividing the first argument p by the second argument q. Parameters: p - numerator Parameters: q - denominator (must be different from zero) the floor of the rational number p / q.

getMessage
public static String getMessage(String key)(Code)
	Returns the NLS'ed message for the given argument. This is only being called from SWT. Parameters: key - the key to look up the message for the given key See Also: SWT.getMessage(String)

getMessage
public static String getMessage(String key, Object[] args)(Code)

interrupt
public static void interrupt()(Code)
	Interrupt the current thread. Note that this is not available on CLDC.

isLetter
public static boolean isLetter(char c)(Code)
	Answers whether the character is a letter. Parameters: c - the character true when the character is a letter

isLetterOrDigit
public static boolean isLetterOrDigit(char c)(Code)
	Answers whether the character is a letter or a digit. Parameters: c - the character true when the character is a letter or a digit

isSpaceChar
public static boolean isSpaceChar(char c)(Code)
	Answers whether the character is a Unicode space character. Parameters: c - the character true when the character is a Unicode space character

isWhitespace
public static boolean isWhitespace(char c)(Code)
	Answers whether the character is a whitespace character. Parameters: c - the character to test true if the character is whitespace

newDeflaterOutputStream
public static OutputStream newDeflaterOutputStream(OutputStream stream) throws IOException(Code)
	Create an DeflaterOutputStream if such things are supported. Parameters: stream - the output stream a deflater stream or `null` exception: IOException - since: 3.4

newFileInputStream
public static InputStream newFileInputStream(String filename) throws IOException(Code)
	Open a file if such things are supported. Parameters: filename - the name of the file to open a stream on the file if it could be opened. exception: IOException -

newFileOutputStream
public static OutputStream newFileOutputStream(String filename) throws IOException(Code)
	Open a file if such things are supported. Parameters: filename - the name of the file to open a stream on the file if it could be opened. exception: IOException -

newInflaterInputStream
public static InputStream newInflaterInputStream(InputStream stream) throws IOException(Code)
	Create an InflaterInputStream if such things are supported. Parameters: stream - the input stream a inflater stream or `null` exception: IOException - since: 3.3

pow2
public static int pow2(int n)(Code)
	Returns 2 raised to the power of the argument. Parameters: n - an int value between 0 and 30 (inclusive) 2 raised to the power of the argument exception: IllegalArgumentException - ERROR_INVALID_RANGE - if the argument is not between 0 and 30 (inclusive)

round
public static int round(int p, int q)(Code)
	Answers the result of rounding to the closest integer the number obtained by dividing the first argument p by the second argument q. IMPORTANT: the j2me version has an additional restriction on the arguments. p must be within the range 0 - 32767 (inclusive). q must be within the range 1 - 32767 (inclusive). Parameters: p - numerator Parameters: q - denominator (must be different from zero) the closest integer to the rational number p / q

sin
public static int sin(int angle, int length)(Code)
	Answers the length of the side opposite to the given angle of a right triangle. In other words, it returns the integer conversion of length * sin (angle). IMPORTANT: the j2me version has an additional restriction on the argument. length must be between -32767 and 32767 (inclusive). Parameters: angle - the angle in degrees Parameters: length - the length of the triangle's hypotenuse the integer conversion of length * sin (angle)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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