In fact, you can directly start learning Java without any prior knowledge of programming language. But, the syntax in Java is similar to the syntax of the C programming language, therefore, Knowing C language helps to get hold of Java quickly. Having introduced to object-oriented principles before starting Java, also helps in the understanding of the language so, having an idea on object-oriented languages such as C++ also helps. In short, if you know C or C++ it will be a little bit easier to cope with Java technology.

To add a logic to show maximum value it hardly matters if you are using trial version or licensed version. Try using database views to add this logic simply.You can refer this link to know more technical capabilities of SAP Cloud IoT: https://help.sap.com/docs/SAP_IoTSAP offers a comprehensive portfolio of solutions for the Internet of Things (IoT). This in-memory IoT platform can help you quickly develop, deploy, and manage your own real-time IoT and machine-to-machine (M2M) applications. Use the platform to automate processes at the core and connect to almost anything at the edge of your network.Read More

Note that Eclipse UI is JAVA based so you can automate Eclipse using QTP Java add-ins.To perform QTP Java add-in, Go to Control Panel → Add or Remove Programs and select Quickest Professional from the list. Click on Change button.To perform add-in installation, click on small black down arrow next to the cross button for Java Add-in. Clicking on it would show a small menu with 3 options as shown in the below image.

You would require changing the connection.properties file of your local Tomcat Server (Server > Java Web Tomcat 8 Server-config/config_master/connection_data), to point to the HANA database. Here are the usual parameters that need to be configured for HANA database javax.persistence.jdbc.driver = com.sap.db.jdbc.Driver javax.persistence.jdbc.url = jdbc:sap://:/?reconnect=true&autocommit=false javax.persistence.jdbc.user = db-user javax.persistence.jdbc.password = db-pass eclipselink.target-database = HANA

You would require to change the connection.properties file of your local Tomcat Server (Server > Java Web Tomcat 8 Server-config/config_master/connection_data), to point to the HANA database.Here are the usual parameters that need to be configured for HANA databasejavax.persistence.jdbc.driver=com.sap.db.jdbc.Driver javax.persistence.jdbc.url=jdbc:sap://:/?reconnect=true&autocommit=false javax.persistence.jdbc.user=db-user javax.persistence.jdbc.password=db-pass eclipselink.target-database=HANA

I faced a similar issue earlier but it was because of a bug in JAVA security package (refer link for more details)http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7044060I just got updated myself to latest OpenJDK7 and it solved my issue. I think you can try the same and check if it helps.

Using SAP GUI, you can only access ABAP or ABAP+Java based system. You can check at multiple places if it is a dual system.T-code: SMICM, you can checklist of services in transaction SMICM (Goto --> Services) - dual stack systems will have the J2EE services listed too. There will also be an AS Java menu in SMICM on ABAP+Java systems.

When you use Java connector you need basic authorization to read metadata of Function Module. S_RFC is an authorization object for the RFC call.This object contains the following fieldsRFC_TYPE Type of the RFC object you want to protect. You can pass the value 'FUGR'- function group) or 'FUNC'- function module.RFC_NAME Name of RFC to be protected. This file contains a value of the function group or of function modules.CTVT ActivityThis field may take the value 16.In case you want a user to be able to call function modules in-group 'ABCD' remotely, following user authorization is required          ... Read More

As per my understanding,  the only way to get the MQ jar files or the MQ C/C++ library files onto a system is by installing any of the below:Using WebSphere MQ product orUsing WebSphere MQ Client SupportPacsYou can find jar file under WebSphere MQ V7.0 Clients SupportPacks. The install files are commonly available under java/lib directory.You can try installing jar files from Fix Central. Go to Fix Central and enter "Java" in the Text search box.https://www-945.ibm.com/support/fixcentral/swg/identifyFixes?query.parent=ibm~WebSphere&query.product=ibm~WebSphere~WebSphere%20MQ&query.release=9.0&query.platform=AllThe name of the file to be downloaded is in this format:-[IBM|WS]-MQ-Install-Java-All.jar.For example, for MQ V9.0:9.0.0.0-IBM-MQ-Install-Java-All.jar.You have the following files that can be moved to ... Read More

Note that all SAP ERP all modules run on SAP ABAP stack. SAP NetWeaver Application Server (ABAP Stack) is part of the SAP NetWeaver portfolio and represents the ABAP-based technical basis for many SAP products. It delivers technical frameworks, tools, repositories, and much more.If you are planning to use SAP PI module then you should install Java Stack. Whenever you need something like- Adobe Interactive Forms or NetWeaver Portal stuff) that requires the Java Stack. You can go for an upgrade without installing Java Stack. In earlier releases of SAP ERP, there were SAP ABAP based instances. With the release ... Read More