print barcode labels using vb.net Various Character Methods in Java

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Table 14-7 Various Character Methods
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Method
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Description
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Static boolean isDefined(char ch)
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Returns true if ch is defined by Unicode Otherwise, it returns false Returns true if ch is a digit Otherwise, it returns false Returns true if ch should be ignored in an identifier Otherwise, it returns false Returns true if ch is an ISO control character Otherwise, it returns false
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Static boolean isDigit(char ch)
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Static boolean isIdentifierIgnorable(char ch) Static boolean isISOControl(char ch)
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Static boolean isJavaIdentifierPart(char Returns true if ch is allowed as part of a Java ch) identifier (other than the first character) Otherwise, it returns false Static boolean isJavaIdentifierStart(char ch) Returns true if ch is allowed as the first character of a Java identifier Otherwise, it returns false Returns true if ch is a letter Otherwise, it returns false Returns true if ch is a letter or a digit Otherwise, it returns false Returns true if ch is a lowercase letter Otherwise, it returns false Returns true if ch is a Unicode space character Otherwise, it returns false Returns true if ch is a Unicode titlecase character Otherwise, it returns false Returns true if ch is allowed as part of a Unicode identifier (other than the first character) Otherwise, it returns false Returns true if ch is allowed as the first character of a Unicode identifier Otherwise, it returns false Returns true if ch is an uppercase letter Otherwise, it returns false Returns true if ch is whitespace Otherwise, it returns false Returns lowercase equivalent of ch Returns titlecase equivalent of ch Returns uppercase equivalent of ch
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Static boolean isLetter(char ch)
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Static boolean isLetterOrDigit(char ch)
static boolean isLowerCase(char ch)
static boolean isSpaceChar(char ch)
static boolean isTitleCase(char ch)
static boolean isUnicodeIdentifierPart(char ch)
static boolean isUnicodeIdentifierStart(char ch)
static boolean isUpperCase(char ch)
static boolean isWhitespace(char ch)
static char toLowerCase(char ch) static char toTitleCase(char ch) static char toUpperCase(char ch)
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Character defines the forDigit( ) and digit( ) methods, shown here: static char forDigit(int num, int radix) static int digit(char digit, int radix) forDigit( ) returns the digit character associated with the value of num The radix of the conversion is specified by radix digit( ) returns the integer value associated with the specified character (which is presumably a digit) according to the specified radix Another method defined by Character is compareTo( ), which has the following two forms: int compareTo(Character c) int compareTo(Object obj) The first form returns 0 if the invoking object and c have the same value It returns a negative value if the invoking object has a lower value Otherwise, it returns a positive value The second form works just like the first if obj is a reference to a Character Otherwise, a ClassCastException is thrown These methods were added by Java 2 Character also defines the equals( ) and hashCode( ) methods Two other character-related classes are CharacterSubset, used to describe a subset of Unicode, and CharacterUnicodeBlock, which contains Unicode 20 character blocks
Boolean
Boolean is a very thin wrapper around boolean values, which is useful mostly when you want to pass a boolean variable by reference It contains the constants TRUE and FALSE, which define true and false Boolean objects Boolean also defines the TYPE field, which is the Class object for boolean Boolean defines these constructors: Boolean(boolean boolValue) Boolean(String boolString) In the first version, boolValue must be either true or false In the second version, if boolString contains the string "true" (in uppercase or lowercase), then the new Boolean object will be true Otherwise, it will be false Boolean defines the methods shown in Table 14-8 Table 14-8 The Methods Defined by Boolean
Method
Description
Boolean booleanValue( ) Boolean equals(Object boolObj)
Returns boolean equivalent Returns true if the invoking object is equivalent to boolObj Otherwise, it returns false Returns true if the system property specified by propertyName is true Otherwise, it returns false
static boolean getBoolean(String propertyName)
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int hashCode( ) String toString( )
Returns the hash code for the invoking object Returns the string equivalent of the invoking object Returns true if boolString contains the string "true" (in uppercase or lowercase) Otherwise, it returns false
static Boolean valueOf(String boolString)
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