2. Dr.Jame
Gosling
Sun Microsystems
Oak)
Java)

3. 1)
OOP: Object Oriented Programming)
2) Java
platform
independence
java
3) Free
Source
Open

4. Java
1.
Structure
1.1 Comment
Source code
- comment
comment
//comment comment
- comment
comment */
/*
Comment
Comment
*/

5. 1.2 Keyword
Java
class,boolean,char
1.3 Identifiers
method ,
,
class
,_,$

6. Java
1) Java Application
Java
2) Java Applets
Java
HTML
Browser
Utilities
Web
Java

7. 1.4 Separators
1.
2.
3.
method
parameter
private void hello( );
if ,while,for ,do
if ( i=0 )
casting
String a=( String )x;

8. 1.
2.
-
1.
Array
String a[ ];
index
a[ 0 ]=10;
;
String a ;
,
array
String a , b , c;
1.
2.
package,subpackage
package com.test.Test1;
method
object.hello();
class
Object

9. -
{}
method
class
class A{
}
Private void hello(){
}
2.
String a[]={"A","B","C"};
Array

10. Scanner
Scanner keyboard;
keyboard
Scanner
new
= new
(
);

11. keyboard
System.in
keyboard = new Scanner(System.in);
Scanner

12. nextByte
()
nextDou
ble()
nextFloat
()
nextInt()
nextLine(
Byte
Double
Float
Int

13. int number;
Scanner keyboard = new Scanner(System.in);
System.out.print(“Enter an integer value: “);
number = keyboard.nextInt();

14. import
import
import
Scanner
import java.util.Scanner
Scanner
java
util
util

15. Operators)
Arithmetic Operators)

16. Operator
"*"(Multiply)
1
"/" (Divide)
2
"%" (Modulus)
3
"+" (Add)
4
"-" (Minus)
op1-op1:
5

17. class BasicMath{
public static void main (String args[]){
int a = 1 + 1; int b = a * 3; int c = b / 4;
int d = b " a; int e = -d; int f = 9%5;
System.out.println("a = " + a);
System.out.println("b = " + b);
System.out.println("c = " + c);
System.out.println("e = " + e);
System.out.println("9%5 = " + 9%5);
}
}

18. Relational Operators)
Boolean)

19. Relational Operator
<
Op1<Op2 :
Op2
<=
Op1<=Op2 :
Op2
Op1
Op1
a=(1<3); //a
a=(5<=7); //a
Op2
>
Op1>Op2 :
Op1
>=
Op1>=Op2 :
Op2
Op1
a=(5>=7); //a
==
Op1==Op2 :
Op2
Op1
a=(5==7); // a
5
7
!=
Op1!=Op2 :
Op2
":
(expression)"a:b :
expression
Op1
operand a
Op2 a=(5>7); //a
a=(5!=7); // a
5
7
a=(3>5)"false:true; //a
3
5
true

20. Logical Operators)
Boolean

21. 1
2
AND
true
1
true
true
1
false
false
0 true
false
0 false
1
true
0 false
1
false
0 false
1
OR
XOR
true
1
false
0 true
1
true
1
0 true
1
true
1
0 false
0 false
0
0

22. Boolean Operator
Operator
!
NOT)
!(Op1)
&&
AND)
Op1 && Op2
Op2
||
OR)
Op1 || Op2
Op2
a= !(true); // a
Op1 a= !(true && false); // a
Op1
a= !(true); // a

23. String
String
Class
java.lang
”
character
1
Class
“String”
Package
“
1
“String”
String Class

24. Object
String
6
1
String
Object = new String(
;
2
String
Object =
;
3
String (char chars[]);
String
Array
Chars
String

25. 4
String (char chars[], int startIndex, int
numChars);
Array
String
startIndex
array
numChars
startIndex

26. 5
String ( String
String
String
;
String
String
6
Array
ASCII
- String (byte asciiChars[]);
String

27. http://www.sourcecode.in.th/lession.php?no= &group=
https://sites.google.com/site/javabasiceaw/home
http://java see.blogspot.com/
java-java-structure.