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Scala b String Methods Following is the list of methods defined by java.lang.String class and can be used directly in your Scala programs: S.No 1 2 3 4 5 6 7 8 9 10 11 12 Methods with Description char charAt(int index) Returns the character at the specified index. int compareTo(Object o) Compares this String to another Object. int compareTo(String anotherString) Compares two strings lexicographically. int compareToIgnoreCase(String str) Compares two strings lexicographically, ignoring case differences. String concat(String str) Concatenates the specified string to the end of this string. boolean contentEquals(StringBuffer sb) Returns true if and only if this String represents the same sequence of characters as the specified StringBuffer. static String copyValueOf(char[] data) Returns a String that represents the character sequence in the array specified. static String copyValueOf(char[] data, int offset, int count) Returns a String that represents the character sequence in the array specified. boolean endsWith(String suffix) Tests if this string ends with the specified suffix. boolean equals(Object anObject) Compares this string to the specified object. boolean equalsIgnoreCase(String anotherString) Compares this String to another String, ignoring case considerations. byte getBytes() Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array. 94
Scala 13 14 15 16 17 18 19 20 21 22 23 24 25 26 byte[] getBytes(String charsetName Encodes this String into a sequence of bytes using the named charset, storing the result into a new byte array. void getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin) Copies characters from this string into the destination character array. int hashCode() Returns a hash code for this string. int indexOf(int ch) Returns the index within this string of the first occurrence of the specified character. int indexOf(int ch, int fromIndex) Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index. int indexOf(String str) Returns the index within this string of the first occurrence of the specified substring. int indexOf(String str, int fromIndex) Returns the index within this string of the first occurrence of the specified substring, starting at the specified index. String intern() Returns a canonical representation for the string object. int lastIndexOf(int ch) Returns the index within this string of the last occurrence of the specified character. int lastIndexOf(int ch, int fromIndex) Returns the index within this string of the last occurrence of the specified character, searching backward starting at the specified index. int lastIndexOf(String str) Returns the index within this string of the rightmost occurrence of the specified substring. int lastIndexOf(String str, int fromIndex) Returns the index within this string of the last occurrence of the specified substring, searching backward starting at the specified index. int length() Returns the length of this string. boolean matches(String regex) Tells whether or not this string matches the given regular expression. 95
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Scala About the Tutorial Scala is a
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Scala 4. SCALA - DATA .............
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Scala Higher-Order Functions ......
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Scala Regular-Expression Examples .
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Scala Scala can Execute Java Code S
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Scala We assume that the readers of
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Scala Windows \>scala -version Scal
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Scala Welcome to Scala version 2.9.
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Scala $salary, 123abc, -salary Oper
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Scala Newline Characters Scala is a
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4. SCALA - DATA Scala Scala has all
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Scala "Hello,\nWorld!" "This string
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5. SCALA - VARIABLES Scala Variable
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Scala } Save the above program in D
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Methods Variables 6. SCALA - CLASSE
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Scala \>scala Demo Output Point x l
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Scala Implicit classes may not be
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7. SCALA - ACCESS MODIFIERS Scala T
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Scala } Scope of Protection Access
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8. SCALA - OPERATORS Scala An opera
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Scala == (Equal) 1 Checks if the va
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Scala It is called Logical AND oper
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Scala Ex: (A & B) will give 12, whi
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Scala \>scala Demo Output: a & b =
Page 52 and 53: Scala Try the following example pro
Page 54 and 55: Scala c &= a = 0 c ^= a = 10 c |= a
Page 56 and 57: 9. SCALA - IF ELSE STATEMENT Scala
Page 58 and 59: Scala if(Boolean_expression){ //Exe
Page 60 and 61: Scala }else if( x == 30 ){ println(
Page 62 and 63: 10. SCALA - LOOP STATEMENTS Scala T
Page 64 and 65: Scala while(condition) { Conditiona
Page 66 and 67: Scala jumps back up to do, and the
Page 68 and 69: Scala object Demo { } def main(args
Page 70 and 71: Scala } } Save the above program in
Page 72 and 73: Scala Scala's for loop allows to fi
Page 74 and 75: Scala \>scalac Demo.scala \>scala D
Page 76 and 77: Scala object Demo { def main(args:
Page 78 and 79: Scala Output: Value of a: 1 Value o
Page 80 and 81: 11. SCALA - FUNCTIONS Scala A funct
Page 82 and 83: Scala var sum:Int = 0 sum = a + b r
Page 84 and 85: Scala println("Arg value[" + i + "]
Page 86 and 87: Scala } Save the above program in D
Page 88 and 89: Scala logWithDateBound("message3" )
Page 90 and 91: Scala \>scala Demo Output Factorial
Page 92 and 93: Scala Currying Functions Currying t
Page 94 and 95: 12. SCALA - CLOSURES Scala A closur
Page 96 and 97: 13. SCALA - STRINGS Scala This chap
Page 98 and 99: Scala "My name is ".concat("Zara");
Page 100 and 101: Scala val name = “James” printl
Page 104 and 105: Scala 27 28 29 30 31 32 33 34 35 36
Page 106 and 107: 14. SCALA - ARRAYS Scala Scala prov
Page 108 and 109: Scala } println("Total is " + total
Page 110 and 111: Scala Save the above program in Dem
Page 112 and 113: Scala print( " " + x ) } println()
Page 114 and 115: 15. SCALA - COLLECTIONS Scala Scala
Page 116 and 117: Scala val nums = Nil println( "Head
Page 120 and 121: Scala 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 122 and 123: Scala 34 35 36 37 38 39 40 41 42 43
Page 126 and 127: Scala Find Common Values Insets You
Page 128 and 129: Scala 14 def diff(that: Set[A]): Se
Page 130 and 131: Scala 39 def sum: A Returns the sum
Page 132 and 133: Scala val nums: Map[Int, Int] = Map
Page 134 and 135: Scala colors.keys.foreach{ i => pri
Page 136 and 137: Scala 5 def iterator: Iterator[(A,
Page 138 and 139: Scala 30 def min: (A, B) Finds the
Page 140 and 141: Scala You can use Tuple to write a
Page 142 and 143: Scala Concatenated String: (1,hello
Page 144 and 145: Scala } } Save the above program in
Page 146 and 147: Scala 2 def isEmpty: Boolean Return
Page 148 and 149: Scala number of words Find Min & Ma
Page 150 and 151: Scala 4 def ++[B >: A](that :=> Gen
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Scala 28 def max: A Finds the large
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16. SCALA - TRAITS Scala A trait en
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Scala Value classes and Universal T
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17. SCALA - PATTERN MATCHING Scala
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Scala val charlie = new Person("Cha
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18. SCALA - REGULAR EXPRESSIONNS Sc
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Scala \\n Back-reference to capture
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Scala val pattern = new Regex("abl[
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Scala } } } } Save the above progra
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20. SCALA - EXTRACTORS Scala An ext
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Scala def main(args: Array[String])
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Scala print("Please enter your inpu
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