??????????????? JAVA ???????????

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??????????????? JAVA ???????????

• ??? ?. ??????? ????????
• http//www.siam2dev.com
• xnattapong_at_hotmail.com

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????????????(Operator)

• ?????????????????????????(Arithmetic Operators)
• ???????????????????????(Relational Operators)
• ????????????????????(Bitwise Operators)
• ?????????????????????????(Logical Operators)

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?????????????????????????(Arithmetic Operators)

• ??????????? ???????? ????????
• ??? ab
• - ?? a-b
• ??? ab
• / ??? a/b
• ???????????? ab (Modulus)

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Example Of Arithmetic Operators

• public class testing //????????testing.java
• public static void main()
• int a5,b2,c6
• aab
• ba-c
• bb2
• aa/2
• cab
• System.out.println("a"a",b"b",c"c)
  

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???????????????????????(Relational Operators)

• ??????????? ???????? ????????
• gt ??????? agtb
• gt ?????????????????? agtb
• lt ???????? altb
• lt ??????????????????? altb
• ??????? a b
• ! ?????????? a!b

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Example Of Relational Operators

• public class testing
• public static void main(String args)
• int value110,value220,value310
• System.out.println(value1gtvalue2)
• System.out.println(value1gtvalue3)
• System.out.println(value1ltvalue2)
• System.out.println(value1ltvalue3)
• System.out.println(value1value2)
• System.out.println(value1!value2)

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????????????????????(Bitwise Operators)

• ??????????? ???????? ????????
• gtgt Shift ??????????? agtgtb
• ltlt Shift ???????????? altltb
• and ab
• or ab
• xor ab
• complement a

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Example Of Bitwise Operators

• public class test // ????????test.java
• public static void main(String args)
• System.out.println(7gtgt2(7gtgt2))
• System.out.println(7ltlt2(7ltlt2))
• System.out.println(51 (51))
• System.out.println(52 (52))
• System.out.println(16 (16))
• System.out.println(7 (7))

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?????????????????????????(Logical Operators)

• ??????????? ????????
• a b (conditional)
• a b (conditional)
• ! !a

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if else ???????????

• if(condition1)
• statement1
• else if(condition2)
• statement2
• statement3
• else
• statement4

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Example Of if else

• Condition ?????????????????????
• If gt ???
• else gt ???????????if

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Example Of if else (2)

• public class testing
• public static void main(String args)
• boolean atrue
• char A'T',B'F'
• if(a)
• System.out.println(A)
• else
• System.out.println(B)

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Example Of if else (3)

• public class testing
• public static void main(String args)
• int aInteger.parseInt(args0)
• if(agt50)
• System.out.println("The Value is higher
  than fifty.")
• else if(a50)
• System.out.println("The Value is equal
  fifty.")
• else
• System.out.println("The Value is lower than
  fifty.")

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Example Of if else (3)

• public class testing
• public static void main(String args)
• int aInteger.parseInt(args0)
• int bInteger.parseInt(args1)
• if(agt50bgt50)
• System.out.println("The Value A And B are
  higher than fifty.")
• else if(a50b50)
• System.out.println("The Value A And B are
  equal fifty.")
• else if(alt50blt50)
• System.out.println("The Value A And B are
  lower than fifty.")
• else if(agt50bgt50)
• System.out.println("The Value A Or B is
  higher than fifty.")
• else if(a50b50)
• System.out.println("The Value A Or B are
  equal fifty.")
• else if(alt50blt50)
• System.out.println("The Value A Or B are
  lower than fifty.")

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Example Of if else (4)

• public class testing
• public static void main(String args)
• int aInteger.parseInt(args0)
• int bInteger.parseInt(args1)
• if(agt50bgt50)
• System.out.println("The Value A And B are
  higher than fifty.")
• if(a50b50)
• System.out.println("The Value A And B are
  equal fifty.")
• if(alt50blt50)
• System.out.println("The Value A And B are
  lower than fifty.")
• if(agt50bgt50)
• System.out.println("The Value A Or B is
  higher than fifty.")
• if(a50b50)
• System.out.println("The Value A Or B are
  equal fifty.")
• if(alt50blt50)
• System.out.println("The Value A Or B are
  lower than fifty.")

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Switch - case

• switch(variable)
• case value1 statement
• statement
• statement
• break
• case value2 statement
• statement
• statement
• break
• default

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Example Of Switch - case

• public class testing
• public static void main(String args)
• int aInteger.parseInt(args0)
• switch(a)
• case (50)System.out.println("The Value is
  equal fifty.")
• case (40)System.out.println("The Value is
  equal forty.")
• case (30)System.out.println("The Value is
  equal thirty.")
• default System.out.println(Not
  equal Anything.")

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Array

• Array ???????
• ????????????? Array
• ?????????? ??????????
• ?????????? ??????????
• ???????????? Array
• ?????????????????????????array new
  ???????????????n

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Example Of Array

• public class testing
• public static void main(String args)
• int a
• int b
• a new int3
• b new int2
• int c new int2
• a01
• a12
• a23
• b04
• b15
• c06
• c17
• System.out.print(a0""a1""a2)
• System.out.print(b0""b1""c0""c1
  )

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Example Of Array (2)

• public class testing
• public static void main(String args)
• int a,b,c
• a new int3
• b new int2
• c new int2
• a01
• a12
• a23
• b04
• b15
• c06
• c17
• System.out.print(a0""a1""a2)
• System.out.print(b0""b1""c0""c1
  )

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Example Of Array (3)

• public class testing
• public static void main(String args)
• String arr Testing , Test ,
  end of array
• int a 1,2,3
• int b 4,5
• int c 6,7
• System.out.print(a0""a1""a2)
• System.out.print(b0""b1""c0""c1
  )
• System.out.print(arr0arr1arr2)

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Example Of Array (4)

• public class testing
• public static void main(String args)
• String art "Testing", "Test", "end of
  array"
• int a 1,2,3
• int b 4,5
• int c 6,7
• System.out.print(a0""a1""a2)
• System.out.print(b0""b1""c0""c1
  "\n")
• System.out.print(art0" "art1" "art2)

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Array 2 Dimension

• ?????????? ??????????m
• ??????????0 ??????????n
• m ????????
• n ????????????

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Example Of Array 2 Dimension

• public class testing
• public static void main(String args)
• int a new int3
• a0 new int1
• a1 new int2
• a2 new int3

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Example Of Array 2 Dimension(2)



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Assignment

• ???????????????????????????????????
  ???????????????????????????????
  ??????????????????????????
• A gt80
• B gt75lt80
• B gt70lt75
• C gt65lt70
• C gt60lt65
• D gt55lt60
• D gt50lt55
• F lt50
• ????
• Java testing 90
• Your Grade is A!!!.

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Assignment (2)

• ???????????????????????Array????? 5 ????
  ??????????????????????? 4 ??????????????User
  ??????????????????????????????????????????????????
  ??????
• Java assignment2 10 20 30 40
• Your summary is 100

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Assignment (3)

• ???????????????????? ??????array 2 ????
• ???????
• 1
• 2 3
• 5 8 13
• 21 34 55 89
• 144 233 377 610 987