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Articles on Trending Technologies
Technical articles with clear explanations and examples
Why java is both compiled and interpreted language.
Yes, a java program is first compiled into bytecode which JRE can understand. ByteCode is then interpreted by the JVM making it as interpreted language.
Read MoreJava Variable Narrowing Example
Narrowing refers to passing a higher size data type like int to a lower size data type like short. It may lead to data loss. Casting is required for narrowing conversion. Following program output will be 44. public class MyFirstJavaProgram { public static void main(String []args) { int a = 300; byte b = (byte)a; // narrowing System.out.println(b); } }
Read MoreC++11 Features Supported by Intel
The C++11 features supported by Intel are available as an official guide in their docs. You can check these features out on https://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler.
Read MoreIn the query [SELECT column1, column2 FROM table_name WHERE condition; ] which clause among 'SELECT', 'WHERE' and 'FROM' is evaluated in the last by the database server and why?
As we know that SELECT clause is used to show all the rows and columns hence SELECT clause is evaluated in the last by the database server.
Read MoreHow MySQL LOCATE() function is different from its synonym functions i.e. POSITION() and INSTR() functions?
As all of these functions are used to return the position of a substring within a string but LOCATE() function is a bit different from POSITION() and INSTR() function. In both POSITION() AND INSTR() functions, we cannot manage the starting position of search with the help of argument as position argument in LOCATE() function. All of these functions are having a difference in syntax also.
Read MoreHow changes, made in the current transaction, can be permanently eliminated from MySQL database?
We can use ROLLBACK command to eliminate the changes, made in a current transaction, permanently from MySQL database. Suppose if we run some DML statements and it updates some data objects, then ROLLBACK command will eliminate these updates permanently from the database. Example Suppose we have the following data in table ‘marks’ and we applied the transaction and ROLLBACK command as follows − mysql> SELECT * FROM Marks; +------+---------+---------+-------+ | Id | Name | Subject | Marks | +------+---------+---------+-------+ | 1 | Aarav | Maths | ...
Read MoreJava Boolean operators
There are following boolean operators supported by Java language.Assume variable A holds 10 and variable B holds 20, then −OperatorDescriptionExample== (equal to)Checks if the values of two operands are equal or not, if yes then condition becomes true.(A == B) is not true.!= (not equal to)Checks if the values of two operands are equal or not, if values are not equal then condition becomes true.(A != B) is true.> (greater than)Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true.(A > B) is not true.< (less than)Checks if the ...
Read MoreRegular Expressions syntax in Java Regex
Following is a simple program demonstrating how to use regular expression in Java. Java Regex Characters
Read MoreWhy the use of "using namespace std' considered bad practice?
C++ has a standard library that contains common functionality you use in building your applications like containers, algorithms, etc. If names used by these were out in the open, for example, if they defined a queue class globally, you'd never be able to use the same name again without conflicts. So they created a namespace, std to contain this change.The using namespace statement just means that in the scope it is present, make all the things under the std namespace available without having to prefix std:: before each of them.While this practice is okay for example code, pulling in the ...
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