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Alankritha Ammu has Published 45 Articles

Alankritha Ammu
291 Views
NullPointerException is a runtime exception and it is thrown when the application try to use an object reference which has a null value.For example, using a method on a null reference.Object ref = null; ref.toString(); // this will throw a NullPointerException

Alankritha Ammu
3K+ Views
Java memory model is divided between Thread Stacks (One for each thread) and a heap area.Thread Stack: It is a thread specific memory area and contains local variables, methods call information etc. JVM stacks could be of fixed size or variable size. If computation in a thread exceeds its stack ... Read More

Alankritha Ammu
5K+ Views
It depends if you want to write it to a list screen or you want to convert it to a text variable. To write it to a list screen, you can use below code −WRITE I_my_dateMM/DD/YYYYTo convert it to a text variable, you can use below command −WRITE l_my_dateTO l_my_text ... Read More

Alankritha Ammu
1K+ Views
Following are some of the differences between C and C++.When compared to C++, C is a subset of C++. All valid C programs are valid C++ programs.C is a structural or procedural programming language, while C++ is an object oriented programming language.In C, Functions are the fundamental building blocks, while ... Read More

Alankritha Ammu
253 Views
Suppose if a table has many values having whitespaces in the columns of a table then it is wastage of space. We can use TRIM() function to remove whitespaces from all the rows and update the table too in a single query. Following the example from ‘Employee’, having whitespaces in ... Read More

Alankritha Ammu
129 Views
We can also use comparison operators in WHERE clause along with LIKE operator to get specific output. It is demonstrated in the following example −ExampleSuppose we want to get the names end with letter ‘v’ from a table but we do not want a specific name say ‘Gaurav’ in the ... Read More

Alankritha Ammu
279 Views
We can fetch all the record from a MySQL table by using SELECT * from table_name; query. An example is as follows, fetched all the records from ‘Employee’ table −mysql> Select * from Employee; +------+--------+ | Id | Name | +------+--------+ | 100 | Ram | | 200 | Gaurav | | 300 | Mohan | +------+--------+ 3 rows in set (0.00 sec)

Alankritha Ammu
99 Views
We can display the name of MySQL database that is currently in use by Select Database() command.mysql> select database(); +------------+ | database() | +------------+ | tutorial | +------------+ 1 row in set (0.00 sec)This command shows that we currently use tutorial database.

Alankritha Ammu
400 Views
The JavaScript version of sleep() is “await”. The await feature pauses the current aync function.ExampleYou can try to run the following code to implement sleep in JavaScriptLive Demo function setSleep(ms) { return new ... Read More

Alankritha Ammu
305 Views
The “return” statement in JavaScript mentions a value, which you like to return. Inside a function, the value is returned to the function caller.ExampleYou can try to run the following code to implement return statement inside a functionLive Demo function ... Read More