Tip: Experienced Java programmers can quickly get to a component's documentation: Locate and click the technology in the documentation diagram. Documentation packages for previous releases are also available: J2SE 1.3.1, J2SE 1.4.2, J2SE 5.0.
Java DB is Sun's supported distribution of the open source Apache Derby database. Its ease of use, standards compliance, full feature set, and small footprint make it the ideal database for Java developers. Java DB is written in the Java programming language, providing "write once, run anywhere" portability. It can be embedded in Java applications, requiring zero administration by the developer or user. It can also be used in client server mode. Java DB is fully transactional and provides a standard SQL interface as well as a JDBC 4.0 compliant driver.
Java Data Objects (JDO)
The Java Data Objects (JDO) API is a standard interface-based Java model abstraction of persistence. Application programmers can use JDO technology to directly store Java domain model instances into the persistent store (database). Benefits include ease of programming, application portability, database independence, high performance, and optional integration with Enterprise JavaBeans (EJB). JDO has been developed under Java Specification Request 12 (JSR 12) and Java Specification Request 243 (JSR 243). Beginning with JDO 2.0, the development of the API and the Technology Compatibility Kit (TCK) takes place within the Apache JDO open-source project.
The Java Database Connectivity (JDBC) API is the industry standard for database-independent connectivity between the Java programming language and a wide range of databases – SQL databases and other tabular data sources, such as spreadsheets or flat files. The JDBC API provides a call-level API for SQL-based database access.
JDBC technology allows you to use the Java programming language to exploit "Write Once, Run Anywhere" capabilities for applications that require access to enterprise data. With a JDBC technology-enabled driver, you can connect all corporate data even in a heterogeneous environment.
JDBC documentation: J2SE 1.4.2 | J2SE 5.0 | Java SE 6
See Also:
JDBC Overview
Industry Support
JDBC Drivers
FAQ
Articles
Books
Forums
Learning JDBC
Sample Code
Community
Please visit the JavaDesktop.org community on java.net for the latest news and information for developers of client applications.
JavaDesktop Forums on java.net: This is our prime spot for discussing all things desktop. It mixes Q&A with advanced developer discussions, such as the direction and future of Java on the desktop. Many of the Desktop Java engineers at Sun participate on these forums.
Java Forums on the Sun Developer Network (SDN): More of a Q&A forum, this is a great resource for both beginning and advanced developers.
Included in the Java SE platform
Included in the Java SE platform
SwingThe Swing API provides a comprehensive set of GUI (Graphical User Interface) components and services which enables the development of commercial-quality desktop and Internet/Intranet applications. Swing is built on top of many of the other Desktop Java technologies found on this page, including JavaBeans, AWT, Java2D, Accessibility, and Internationalization. A great place to jump into Swing programming is The Swing Tutorial
Included in the Java SE platform
Included in the Java SE platform
CORE JAVA CODE
Program 1
//Find Maximum of 2 nos.
class Maxof2{
public static void main(String args[]){
//taking value as command line argument.
//Converting String format to Integer value
int i = Integer.parseInt(args[0]);
int j = Integer.parseInt(args[1]);
if(i > j)
System.out.println(i+" is greater than "+j);
else
System.out.println(j+" is greater than "+i);
}
}
Program 2
//Find Minimum of 2 nos. using conditional operator
class Minof2{
public static void main(String args[]){
//taking value as command line argument.
//Converting String format to Integer value
int i = Integer.parseInt(args[0]);
int j = Integer.parseInt(args[1]);
int result = (i
/* Write a program that will read a float type value from the keyboard and print the following output.
->Small Integer not less than the number.
->Given Number.
->Largest Integer not greater than the number.
*/
class ValueFormat{
public static void main(String args[]){
double i = 34.32; //given number
System.out.println("Small Integer not greater than the number : "+Math.ceil(i));
System.out.println("Given Number : "+i);
System.out.println("Largest Integer not greater than the number : "+Math.floor(i));
}
Program 4
/*Write a program to generate 5 Random nos. between 1 to 100, and it
should not follow with decimal point.
*/
class RandomDemo{
public static void main(String args[]){
for(int i=1;i<=5;i++){ System.out.println((int)(Math.random()*100)); } } } Program 5
/* Write a program to display a greet message according to
Marks obtained by student.
*/
class SwitchDemo{
public static void main(String args[]){
int marks = Integer.parseInt(args[0]); //take marks as command line argument.
switch(marks/10){
case 10:
case 9:
case 8:
System.out.println("Excellent");
break;
case 7:
System.out.println("Very Good");
break;
case 6:
System.out.println("Good");
break;
case 5:
System.out.println("Work Hard");
break;
case 4:
System.out.println("Poor");
break;
case 3:
case 2:
case 1:
case 0:
System.out.println("Very Poor");
break;
default:
System.out.println("Invalid value Entered");
}
}
}
Program 6
/*Write a program to find SUM AND PRODUCT of a given Digit. */
class Sum_Product_ofDigit{
public static void main(String args[]){
int num = Integer.parseInt(args[0]); //taking value as command line argument.
int temp = num,result=0;
//Logic for sum of digit
while(temp>0){
result = result + temp;
temp--;
}
System.out.println("Sum of Digit for "+num+" is : "+result);
//Logic for product of digit
temp = num;
result = 1;
while(temp > 0){
result = result * temp;
temp--;
}
System.out.println("Product of Digit for "+num+" is : "+result);
}
}
Program 7
/*Write a program to Find Factorial of Given no. */
class Factorial{
public static void main(String args[]){
int num = Integer.parseInt(args[0]); //take argument as command line
int result = 1;
while(num>0){
result = result * num;
num--;
}
System.out.println("Factorial of Given no. is : "+result);
}
}
Program 8
/*Write a program to Reverse a given no. */
class Reverse{
public static void main(String args[]){
int num = Integer.parseInt(args[0]); //take argument as command line
int remainder, result=0;
while(num>0){
remainder = num%10;
result = result * 10 + remainder;
num = num/10;
}
System.out.println("Reverse number is : "+result);
}
}
Program 9
/*Write a program to find Fibonacci series of a given no.
Example :
Input - 8
Output - 1 1 2 3 5 8 13 21
*/
class Fibonacci{
public static void main(String args[]){
int num = Integer.parseInt(args[0]); //taking no. as command line argument.
System.out.println("*****Fibonacci Series*****");
int f1, f2=0, f3=1;
for(int i=1;i<=num;i++){ System.out.print(" "+f3+" "); f1 = f2; f2 = f3; f3 = f1 + f2; } } } Program 10
/* Write a program to find sum of all integers greater than 100 and
less than 200 that are divisible by 7 */
class SumOfDigit{
public static void main(String args[]){
int result=0;
for(int i=100;i<=200;i++){ if(i%7==0) result+=i; } System.out.println("Output of Program is : "+result); } }
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