We write a program for the generation of rectangular interface of Digital to Analog Converter (DAC) interference: Let us consider a problem solution in this domain. The problem states that: To get unipolar output, J1 is shorted to J2 on the interface. To display the waveform on a CRO connect pin ... Read More

To search a document in MongoDB by _id, you need to call ObjectId(). Let us first see the syntaxdb.yourCollectionName.find({"_id":ObjectId("yourId")}).pretty();To understand the concept and search a document, let us implement the following query to create a collection with documents> db.searchDocumentDemo.insertOne({"UserId":1, "UserName":"Larry"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5c97a8e4330fd0aa0d2fe487") } ... Read More

There is no concept of TOP in MySQL. The alternate way to write your query is using LIMIT i.e to select 2 records, you need to use TOP 2. Let us see the syntax for the same in MySQLSELECT *FROM yourTableName ORDER BY yourColumnName DESC LIMIT 2;To understand the above ... Read More

The noneMatch() method in Java returns whether no elements of this stream match the provided predicate. The true boolean value is returned if either no elements of the stream match the provided predicate or the stream is empty.The syntax is as followsBoolean noneMatch(IntPredicate predicate)Here, parameter predicate is the stateless predicate ... Read More

The addAtX() method is used in Octet Tuple to add value. Here, X is the index wherein you need to add the value i.e. to add value at index 0, use the addAt0() and value as a parameter. Let us first see what we need to work with JavaTuples. To ... Read More

To remove document on the basis of _id in MongoDB, implement the following syntaxdb.yourCollectionName.remove({“_id”:ObjectId(“yourId”});Let us first implement the following query to create a collection with documents>db.removeDocumentOnBasisOfId.insertOne({"UserName":"Larry", "UserAge":23, "UserCountryName":"US"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5c986f9f330fd0aa0d2fe4a3") } >db.removeDocumentOnBasisOfId.insertOne({"UserName":"Sam", "UserAge":21, "UserCountryName":"UK"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5c986fb4330fd0aa0d2fe4a4") ... Read More

To set value in the JavaTuples KeyValue class, you need to use the setValue() method. Let us first see what we need to work with JavaTuples. To work with KeyValue class in JavaTuples, you need to import the following packageimport org.javatuples.KeyValue;Note Download JavaTuples Jar library to run JavaTuples program. If ... Read More

Yes, you can get the first item in a cursor object using findOne() method. Following is the syntaxdb.yourCollectionName.findOne();However, the following syntax is used if you want a single document in a cursor objectdb.yourCollectionName.findOne({yourCondition});We will first create a collection. Following is the query to create a collection with documents> db.getFirstItemDemo.insertOne({"CustomerName":"Chris", "CustomerAge":28}); ... Read More

To increment all the rows of a particular ID column by 1, you need to use UPDATE command and update the table. The syntax of the query is as follows. We have also used ORDER BY hereUPDATE yourTableName SET yourIdColumnName=yourIdColumnName+1 ORDER BY yourIdColumnName DESC;To understand the above syntax, let us ... Read More

The skip() method of the IntStream class in Java returns a stream consisting of the remaining elements of this stream after discarding the first n elements of the stream.The syntax is as followsIntStream skip(long n)Here, n is the number of elements to skip. The method returns the new stream.Create an ... Read More