Question

I want to connect Java and FLEX.
I have never used Java and also Java is not installed on my PC.
So From Installation of Java to Calling Java Method from FLEX and Receive the Result from Java to FLEX i need steps so any one help me to connect Java and FLEX.

Answer 1

Go through the following steps. This will surely helpful to you…

1 Install JDK in your system

2 Copy apache tomcat server in your c drive

3 Set Environment Variable
(1) Variable Name : JAVA_HOME
Variable Value : C:\Program Files\Java\jdk1.7.0
(2) Variable Name : CATALINE_HOME
Variable Value : C:\apache-tomcat-6.0.35-windows-x86\apache-tomcat-6.0.35

4 Update the Path Environment Variable in Variable Value
Add tha fillowing Path
(1)C:\apache-tomcat-6.0.35-windows-x86\apache-tomcat-6.0.35\bin
(2)C:\Program Files\Java\jdk1.7.0\bin

5 Create a Blazeds folder in webapps folder and extract the blazeds.war file

    Two folder there (1)WEB-INF (2)META-INF

6 Create a folder name example in C:\apache-tomcat-6.0.35-windows-x86\apache-tomcat-6.0.35\webapps\FlexJavaIntegration\WEB-INF\classes

7 Create a Java file in example folder content of java file is below

    package example;

    import java.util.Date;

    public class HelloWorld 
    {
        public HelloWorld() 
        {

        }
        public String getHelloWorld(String name,String name1) 
        {
            String result = null;
            result = name + " and " + name1;
            return result;
        }
        public String getCurrentDate(String name)
        {
            String result = null;
            result = " Current Date is:" + new Date();
            return result;
        } 
    }

8 Complile the .java file in CMD

    javac HelloWorld.java

9 Go to folder C:\apache-tomcat-6.0.35-windows-x86\apache-tomcat-6.0.35\webapps\FlexJavaIntegration\WEB-INF\flex and edit the remoting-config.xml file and add the destination

<destination id="helloworld">
    <properties>
        <source>example.HelloWorld</source>
    </properties>
    <adapter ref="java-object" />
</destination>

10 Start Tomcat Server from CMD
Go to bin folder of Tomcat server folder
Run startup.bat file in cmd and start Tomcat server
check: “localhost:8080” URl in your browser
and if you want to shutdown the tomcat serve write follwing command in CMD
shutdown.bat

11 Create New Flex Application
Select Server Technology – J2EE

12 Click Next and Set Following Properties

Root Folder :    C:\apache-tomcat-6.0.35-windows-x86\apache-tomcat-6.0.35\webapps\blazeds
Root URL        :   http://localhost:8080/blazeds
Context Root    :   /blazeds

And Validate Configuration 

13 The Remote Object Syntax is as follows

<mx:RemoteObject id="ro" destination="helloworld" source="example.HelloWorld" result="resultHandler(event)" fault="faultHandler(event)"/>

    ---------destination in RemoteObject is id of destination in remoting-config.xml
    ---------source in RemoteObject is source of destination in remoting-config.xml

14 Now Call the Java Method as follows

<mx:Button label="Get Hello World!" click="ro.getHelloWorld(txt1.text,txt2.text)"/>
<mx:Button label="Get Time" click="ro.getResults(txt1.text)" />

    Here ro is id of RemoteObject and getHelloWorld & getResults is method from JAVA file.

15 You get result from java class file

NOTE : YOU NEED TO INSTALL THE BLAZEDS AND APACHE TOMCAT SERVER ON YOUR PC