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Programming Articles
Page 2544 of 2547
What is Java API and what is its use?
The full form of API is Application Programming Interface. It is a document which gives you the list of all the packages, classes, and interfaces, along with their fields and methods.Using these API’s, the programmer can know how to use the methods, fields, classes, interfaces provided by Java libraries.
Read MoreCan you use both this() and super() in a constructor in Java?
No, you cannot have both this() and super() in a single constructor.
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What is the Eclipse keyboard shortcut for "System.out.println()" in Java?
To get System.out.println() line in eclipse without typing the whole line type sysout and press Ctrl + space.
Read MoreWhat does import Java.util.* in Java do?
Java util package contains collection framework, collection classes, classes related to date and time, event model, internationalization, and miscellaneous utility classes. On importing this package, you can access all these classes and methods.Following table lists out the classes in the collection package.InterfacesDescriptionClassesCollectionCollection Interface represents a group of objects. It is a root interface of collection framework.Abstract CollectionSetIt is a dynamic group of unique elements. It does not store duplicate element.HashSetLinkedHashSetListThey are similar to sets with the only difference that they allow duplicate values in them.StackvectorArrayListLinkedListQueueIt is an arrangement of the type First-In-First-Out (FIFO).First element put in the queue is the ...
Read MoreQuerying SAP database using Python
Python is one of the most used object-oriented programming languages which is very easy to code and understand.In order to use Python with SAP, we need to install Python SAP RFC module which is known as PyRFC. One of its available methods is RFC_READ_TABLE which can be called to read data from a table in SAP database.Also, the PyRFC package provides various bindings which can be utilized to make calls either way. We can use to make calls either from ABAP modules to Python modules or the other way round. One can define equivalent SAP data types which are used ...
Read MoreWhat is the max length of a Python string?
With a 64-bit Python installation, and 64 GB of memory, a Python 2 string of around 63 GB should be quite feasible. If you can upgrade your memory much beyond that, your maximum feasible strings should get proportionally longer. But this comes with a hit to the runtimes.With a typical 32-bit Python installation, of course, the total memory you can use in your application is limited to something like 2 or 3 GB (depending on OS and configuration), so the longest strings you can use will be much smaller than in 64-bit installations with very high amounts of RAM.
Read MoreAre identifiers hello and Hello same in Java?
Identifiers in Java are case-sensitive, therefore, hello and Hello are considered as two different identifiers.
Read MoreWhy can't we override static methods in Java?
Overloading is the mechanism of binding the method call with the method body dynamically based on the parameters passed to the method call.Static methods are bonded at compile time using static binding. Therefore, we cannot override static methods in Java.
Read MoreHow do I write method names in Java?
While writing a method name we should follow the camel case i.e. first letter of the first word should be small and the first letters of the remaining (later) words should be capital. Example public class Test { public void sampleMethod() { System.out.println("This is sample method"); } public void demoMethod() { System.out.println("This is demo method"); } public static void main(String args[]) { Test obj = new Test(); obj.sample(); obj.demo(); } } Output This is sample method This is demo method
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