How to add a Date Validation in ADF

When imputing dates for Purchasing and Expiry there need to be a validation. That is the Expiry date must be always grater than the Purchased date. Using the following code in the .jsff code you can have the date validation.

 <af:validateDateTimeRange minimum="#{bindings.PurchasedDate.inputValue}"  
 maximum="#{bindings.ExpiryDate.inputValue}"  
 messageDetailNotInRange="Enter your message here"/>  

ADF how to deploy an application

Creating an EAR

First you must change the connection type of the database into "JDBC Data Source" from

"JDBC URL" in the configurations of "AppModule".

Then right click on the Application drop down and select Application properties.
Then  expand Deployment and you'll find "Weblogic", select it. Then uncheck the box "Auto Generate and Synchronize weblogic-jdbc.xml Descriptors During Deployment" and click "OK".
Then expand Run and you'll find "Weblogic", select it. Then select "Fast Swap"and click "OK" 

Then right click on the Model in project tabs and select Deploy and wait until deployment is over

then click "Application" tab and select deploy and in the popup select "Deploy to EAR" and select "OK" then wait until the deployment is over. 

Go to the resource folder where your application is initially saved, there you can find a new folder named "deploy" is created, inside that you can find the EAR you created

Java ADF creating EO and VO

After creating a Data Base connection,

Click the 'Applications Window options' and change the Package level to '1'

Right click on Test Modal and create a new 'Entity Object'

Click 'OK'

Give a name to the entity object

Type Testmodel.eo for the package name. This creates a package named eo 
inside the package Testmodel. Then click 'Browse' following to Schema
Object

You can choose the data base you connected earlier from the Database schema
list Then  click Query and select the required table and double click then press
'OK'

Click 'Next'

Click 'Next'

Select the attribute for the primary key and tick the Primary key check box
and click 'Next'

Click ' Next'

Click 'Next'

Click 'Finish'

Right click on Test Modal and create a new 'View Object'

Give a name to the view object and type Testmodel.vo for the package
name. This creates a package named vo inside the package Testmodel.
Then click 'Next'

Double click 'TestEO' to select it

Click 'Next'

Double click the data base table fields to select them

Click 'Next'

Click 'Next'

Double click to select

Click 'Next'

Click 'Next'

Click 'Next'

Click 'Next'

Click 'Finish'

Creating EO and VO is complete

Java ADF connecting to a Data Base

When you open Oracle JDeveloper Studio you will be prompted to the following screen

Select Connect to a Data Base

Select 'Create a Data Base Connection'

Give a name to your connection

Select the connection  type you use. Here we are using a MySql Data Base

Type the username and the password and give the Data Base name. Then
test the connection and press 'Ok' , if the connection is unsuccessful
check the username, password and the Data Base name 

Click the not started button and change it to 'Done'

Simple Calculator using java

Calculator with user input (Using scaner)

Class = Cal

 import java.util.Scanner;  
 public class Cal {  
      public static void main(String[] args) {  
           temp();   
      }  
      public static void oparator(int x, int y,String oparator) {  
           if("ADD".equals(oparator.toUpperCase())){  
                int z = x + y;  
                System.out.println(z);  
           }  
           else if("SUB".equals(oparator.toUpperCase())) {  
                int h = x - y;  
           System.out.println(h);  
           }  
           else if("DIV".equals(oparator.toUpperCase())) {  
                int i = x / y;  
           System.out.println(i);  
           }  
           else if("REM".equals(oparator.toUpperCase())) {  
                int j = x % y;  
           System.out.println(j);  
           }  
           else if("MUL".equals(oparator.toUpperCase())) {  
                int k = x * y;  
           System.out.println(k);  
           }            
      }  
      public static void temp(){  
          Scanner sc=new Scanner(System.in);  
          System.out.println("Seclect the Oparator");  
          String oparator=sc.nextLine();  
          System.out.println("Enter a first number: ");  
          int FirstNumber=sc.nextInt();  
          System.out.println("Enter a Second number: ");  
          int secondNumber=sc.nextInt();  
          oparator(FirstNumber,secondNumber,oparator);  
          temp();  
      }  
 }  

You can add more operators 

Operator	Description
+ (Addition)	Adds values on either side of the operator.
- (Subtraction)	Subtracts right-hand operand from left-hand operand.
* (Multiplication)	Multiplies values on either side of the operator.
/ (Division)	Divides left-hand operand by right-hand operand.
% (Modulus)	Divides left-hand operand by right-hand operand and returns remainder.
++ (Increment)	Increases the value of operand by 1.
-- (Decrement)	Decreases the value of operand by 1.

Calculator without user input

 public class cal{  
      public static void main (String args[]){  
           int x = 5 ;  
           int y = 6 ;  
           System.out.println("x + y =" + (x+y));  
           System.out.println("x - y =" + (x-y));  
           System.out.println("x / y =" + (x/y));  
           System.out.println("x * y =" + (x*y));  
           System.out.println("x % y =" + (x%y));  
      }  
 }  

Sketch

You can change the data printed in green

public class cal{

            public static void main (String args[]){

                        int x = 5 ;

                        int y = 6 ;

                        System.out.println("x + y =" + (x+y));

                        System.out.println("x - y =" + (x-y));

                        System.out.println("x / y =" + (x/y));

                        System.out.println("x * y =" + (x*y));

                        System.out.println("x % y =" + (x%y));

            }

}

Creating "Hello World" java program

Example

Class = Simple

 class Simple{  
      public static void main (String args[]){  
           System.out.println("Hello World");  
      }  
 }  

Sketch

Copy the following java codes and replace data printed in green. Then run the java program.

class Simple{

                public static void main (String args[]){

                                System.out.println("Hello World");

                }

}

How to compile and run the above program using command prompt

Copy the above sketch into the notepad and save it with the extension .java instead of .txt

Then open the command prompt and type,

            cd C:\Users\Inova\Desktop\new\Hello world   

here (C:\Users\Inova\Desktop\new\Hello world) is the path of the folder in which the java file that you created before is saved.

Then type,

            javac Simple.java

and enter. by typing 'javac' we compile the java file. A new file called CLASS file will be created. Here 'Simple' is the name which the Java file is saved.

Then type,

            java Simple

and enter. Then the compiled java file will run, giving the output "Hello World".

Copy and paste the above sketch on the note pad

Save with the extension .java insted of .txt. Also change the Save as type to
All Files

Text file is saved as a java file

Copy the path of the folder.

Open the command prompt

Type "cd  C:\Users\Inova\Desktop\new\Hello world" and press enter.
(cd  <space>  <copied path> )

Type "javac Simple.java" and press enter. Here the java file compiles and
creates a CLASS file.

The CLASS file also saves in the same folder

Type java Simple and enter

Output : "Hello World"

Java path setting

Right click on Computer icon and click properties

Select Advanced system settings

Click Environment variables..

Click New

Add 'path' as the variable name

Computer - Local Disk (C) - Program files - java - jdk1.8.0_111 - bin
Copy the address

Then click 'Ok'

Path setting is complete