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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to avoid Java code in jsp page?
You can use JSTL, JSP Standard Tag Library or EL, Expression Language to avoid scriptlets.
Read MoreWhat is string constant pool in Java?
When you store a String asString str1 = "Hello";directly, then JVM creates a String object with the given value in a separate block of memory known as String constant pool.And whenever we try to create another String asString str2 = "Hello";JVM verifies whether any String object with the same value exists in the String constant pool, if so, instead of creating a new object JVM assigns the reference of the existing object to the new variable.And when we store String asString str = new String("Hello");using the new keyword, a new object with the given value is created irrespective of the ...
Read MoreDefault location for installation of SAP HANA Studio
You can install SAP HANA studio on Linux platform without Root user. In Windows platform, you can perform the installation without administration rights but it will be available only to the user who has installed it.Default Location on Window Platform: C:\Program Files\sap\hdbstudioDefault installation Location under MAC OS: /Applications/sap/hdbstudio (old) or /Applications/sap/hdbstudio.app (new)Default installation Linux x86 64 bit: /usr/sap/hdbstudio
Read MoreHow can we check that by default MySQL CHAR() function returns a binary string?
With the help of CHARSET() function, we can check which string is returned by MySQL CHAR() function. Following result set will demonstrate it − mysql> Select CHARSET(CHAR(85)); +-------------------+ | CHARSET(CHAR(85)) | +-------------------+ | binary | +-------------------+ 1 row in set (0.00 sec)
Read MoreImmutable String in Java
In Java immutable objects are those whose data can’t be changed or modified (once modified). String class is immutable i.e. once we create a String object its data cannot be modified.
Read MoreHistory of C++ language
The C++ programming language has a history going back to 1979, when Bjarne Stroustrup was doing work for his Ph.D. thesis. He began work on "C with Classes", which as the name implies was meant to be a superset of the C language. His goal was to add object-oriented programming into the C language, which was and still is a language well-respected for its portability without sacrificing speed or low-level functionality.His language included classes, basic inheritance, inlining, default function arguments, and strong type checking in addition to all the features of the C language. The first C with Classes compiler ...
Read MoreWhat will happen if the MySQL AUTO_INCREMENT column reaches the upper limit of the data type?
When the AUTO_INCREMENT column reaches the upper limit of data type then the subsequent effort to generate the sequence number fails. That is why it is advised to use a large enough integer data type for the AUTO_INCREMENT column to hold the maximum sequence value required by us. For example, if we will use TINYINT then AUTO_INCREMENT would be able to generate only 127 sequence numbers and in case of UNSIGNED TINYINT, this value can be extended up to 255.
Read MoreUsing TCP/IP ports for accessing SAP HANA database
To access HANA system on client tools, you need to open different ports to database for these clients. These ports refer to different servers and application service in HANA system.
Read MoreWhy is it not recommended to use the mixture of quoted as well as unquoted values in MySQL IN() function's list?
Actually, MySQL has different comparison rules for quoted values such as strings and unquoted values such as numbers. On mixing the quoted and unquoted values in IN() function list may lead to the inconsistent result set. For example, we must not write the query with IN() function like below − Select Salary from employee where ID IN(1,’a’,2,3,’c’) Instead of this the better way to write the above query is as follows − Select Salary from employee where ID IN(‘1’,’a’,’2’,’3’,’c’)
Read MoreIn SAP Class Builder, I am trying to test ABAP classes. When I press F8, it doesn't show "Create Instance" menu item.
You can access Class Builder by using T-code: SE24 or via Repository Browser SE80 and navigate to class you want to edit. You have to ensure that you set the below parameter to the public. It is also possible that your class implements an interface. It is also possible that class implements an interface. You have to click on magnifying glass icon and you can execute both static and instance methods.
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