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Articles by George John
Page 59 of 79
8086 program to add two 16 bit BCD numbers with carry
In this program we will see how to add two 16-bit BCD numbers with carry.Problem StatementWrite 8086 Assembly language program to add two 16-bit BCD numbers stored in memory offset 500H – 501H and 502H – 503H.DiscussionHere we are adding the 16-bit data byte by byte. At first we are adding lower byte and perform the DAA instruction, then Add higher bytes with carry, and again DAA to adjust. The final result is stored at location offset 600H, and if carry is present, it will be stored at 601H.We are taking two numbers 8523 + 7496 = 16019InputAddressData……50023501855029650374…… Flow Diagram Program OutputAddressData……600196016060201……
Read MorePlease share a working example of session maintenance in JSP.
This example describes how to use the HttpSession object to find out the creation time and the last-accessed time for a session. We would associate a new session with the request if one does not already exist. Session Tracking Session Tracking Session info Value ...
Read MoreWhat is an application Object in JSP?
The application object is direct wrapper around the ServletContext object for the generated Servlet and in reality an instance of a javax.servlet.ServletContext object.This object is a representation of the JSP page through its entire lifecycle. This object is created when the JSP page is initialized and will be removed when the JSP page is removed by the jspDestroy() method.By adding an attribute to application, you can ensure that all JSP files that make up your web application have access to it.
Read MoreReset the primary key to 1 after deleting all the data in MySQL?
To reset the primary key to 1 after deleting the data, use the following syntaxalter table yourTableName AUTO_INCREMENT=1; truncate table yourTableName;After doing the above two steps, you will get the primary key beginning from 1.To understand the above concept, let us create a table. The query to create a table is as followsmysql> create table resettingPrimaryKeyDemo -> ( -> UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY -> ); Query OK, 0 rows affected (0.66 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into resettingPrimaryKeyDemo values(); Query OK, 1 row ...
Read MoreC++ Program that will fill whole memory
In this article we will see how to fill the whole memory by writing a simple C++ program. Here the logic is very simple. We shall create new integer variables by using the dynamic memory allocation. If we create some variables again and again, it will fill the entire primary memory.In C++ to dynamically allocate a memory space we can use the new keyword.The basic syntax of the new operator is like below.pointer_var = new data_typeTo deallocate the memory space, we can use the delete keyword. The syntax isdelete pointer_varNote After running this program it may slow down the performance ...
Read More8086 program to subtract two 16-bit numbers with or without borrow
In this program we will see how to subtract two 16-bit numbers with and without borrow.Problem StatementWrite 8086 Assembly language program to subtract two 16-bit number stored in memory location 3000H – 3001H and 3002H – 3003H.Discussion8086 is 16-bit register. We can simply take the numbers from memory to AX and BX register, then subtract them using SUB instruction. When the Borrow is present, the CY flag will be 1, so we can store borrow into memory, otherwise only store AX into memory.InputAddressData……30002D3001FE3002AD3003BC…… Flow Diagram Program OutputAddressData……300480300541300600……
Read MoreWhat is the use of page object in JSP? Need an example.
JSP gives you an option to specify Error Page for each JSP using page attribute. Whenever the page throws an exception, the JSP container automatically invokes the error page.Following is an example to specifiy an error page for a main.jsp. To set up an error page, use the directive. Error Handling Example We will now write one Error Handling JSP ShowError.jsp, which is given below. Notice that the error-handling page includes the directive . This directive causes ...
Read MoreWhat is the return type of a "count" query against MySQL using Java JDBC?
The return type of count is long. The Java statement is as followsrs.next(); long result= rs.getLong("anyAliasName");First, create a table with some records in our sample database test3. The query to create a table is as followsmysql> create table CountDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(20) -> ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command.The query is as followsmysql> insert into CountDemo(Name) values('John'); Query OK, 1 row affected (0.21 sec) mysql> insert into CountDemo(Name) values('Carol'); Query OK, 1 row affected (0.16 sec) ...
Read MoreHow to return today's records using DATE from DATETIME Field?
Let us first create a table in which one of the column is of datetime type;mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ShippingDate datetime ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command.mysql> insert into DemoTable(ShippingDate) values('2019-03-01 05:45:32'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(ShippingDate) values('2019-04-13 11:34:56'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(ShippingDate) values('2019-03-15 04:45:23'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(ShippingDate) values('2019-04-11 12:10:02'); Query OK, 1 row affected (0.17 sec)Following is the ...
Read More8086 program to find sum of Even numbers in a given series
In this program we will see how to add even numbers in a given seriesProblem StatementWrite 8086 Assembly language program to add the even numbers stored in a given series starts from memory offset 501. The size of the series is stored at memory offset 500.DiscussionTo do this task we are initializing the Source Index (SI) register to the starting address of the series. We are also taking the series size into CL. The CL will be used as counter. To store add we are using AL register. Initially set AL to 0. To check the number is even or ...
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