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Let us get the timezone id strings for timezone America. For this, use the get.AvailableZoneIds() method −ZoneId.getAvailableZoneIds().stream().filter(s ->s.startsWith("America")) .forEach(System.out::println);With that, we have used the forEach to display all the timezones in America −America/Cuiaba America/Marigot America/El_Salvador America/Guatemala America/Belize America/Panama America/Managua America/Indiana/Petersburg America/Chicago America/Tegucigalpa America/Eirunepe America/Miquelon . . .Exampleimport java.time.ZoneId; public class Demo { public static void main(String[] args) { System.out.println("TimeZones in the US"); ZoneId.getAvailableZoneIds().stream().filter(s ->s.startsWith("America")) .forEach(System.out::println); } }OutputTimeZones in the US America/Cuiaba America/Marigot America/El_Salvador America/Guatemala America/Belize America/Panama America/Managua America/Indiana/Petersburg America/Chicago America/Tegucigalpa America/Eirunepe America/Miquelon America/Argentina/Catamarca America/Grand_Turk America/Argentina/Cordoba America/Araguaina America/Argentina/Salta America/Montevideo America/Manaus ... Read More
This is a C++ program to perform Optimal Paranthesization using Dynamic Programming.AlgorithmBegin Take the length n and dimension of matrix as input. MatrixChain() to find out minimum multiplications: Arguments: a[i][j]=Minimum number of scalar multiplications needed to compute the matrix A[i]A[i+1]...A[j] = A[i..j] where dimension of A[i] is p[i-1] x p[i]. a[i][j] means cost is zero when multiplying one matrix. L is chain length. m = cost / scalar multiplications. Body of the function: for i = ... Read More
You can achieve this with the help of ORDER BY CASE statement. The syntax is as follows −SELECT *FROM yourTableName ORDER BY CASE yourIntegerColumnName1 WHEN 2 THEN 1 ELSE 0 END DESC ,yourDateColumnName ASC;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table OrderByCaseDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> GroupId int, -> ArrivalDate date, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.57 sec)Insert some records in the table using insert command. The query is as ... Read More
A buffer can be compared with another buffer using the method compareTo() in the class java.nio.ShortBuffer. This method returns a negative integer if the buffer is less than the given buffer, zero if the buffer is equal to the given buffer and a positive integer if the buffer is greater than the given buffer.A program that demonstrates this is given as follows −Example Live Demoimport java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { ... Read More
The iteration through Unit in JavaTuples is like what you may have seen in Java Arrays collection.Let us first see what we need to work with JavaTuples. To work with the Unit class in JavaTuples, you need to import the following package −import org.javatuples.Unit;Note − Steps to download and run JavaTuples program If you are using Eclipse IDE to run Unit Class in JavaTuples, then Right Click Project → Properties → Java Build Path → Add External Jars and upload the downloaded JavaTuples jar file.The following is an example −Exampleimport org.javatuples.Unit; public class Demo { public static void main(String[] ... Read More
This example demonstrate about How to set fit webview screen in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken web view to show tutorialspoint.com.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.app.ProgressDialog; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @RequiresApi(api = ... Read More
The codePoint() method is used to display a stream of code point values from the given sequence.The syntax is as followsIntStream codePoints()To work with Java IntStream class, you need to import the following packageimport java.util.stream.IntStream;Here is our stringString myStr = "Example!";Now, get the code point valuesIntStream intStream = myStr.codePoints();The following is an example to implement codePoints() method in Java IntStreamExample Live Demoimport java.util.stream.IntStream; public class Demo { public static void main(String args[]) { String myStr = "Example!"; IntStream intStream = myStr.codePoints(); System.out.println("The following is the list of ASCII Values for the ... Read More
To create KeyValue tuple from another collection, use the fromCollection() method. We will be creating the tuple from List collection. Let us first see what we need to work with JavaTuples. To work with KeyValue class in JavaTuples, you need to import the following package.import org.javatuples.KeyValue;Note: Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project → Properties → Java Build Path → Add External Jars and upload the downloaded JavaTuples jar file. Refer the below guide for all the steps to run JavaTuples.Steps: How to run JavaTuples program in EclipseThe following ... Read More
The _id in MongoDB is a field, which is mandatory. In MongoDB, each document stored in a collection requires a unique _id field that acts as a primary key. Following is the syntax to get the array of all the ids i.e. _id in MongoDBdb.yourCollectionName.find({ _id : { $in : [yourValue1, yourValue2, yourValue3, .......N] } } );Let us first implement the following query to create a collection with documents> db.selectInWhereIdDemo.insertOne({"_id":23}); { "acknowledged" : true, "insertedId" : 23 } > db.selectInWhereIdDemo.insertOne({"_id":28}); { "acknowledged" : true, "insertedId" : 28 } > db.selectInWhereIdDemo.insertOne({"_id":45}); { "acknowledged" : true, "insertedId" : 45 } > db.selectInWhereIdDemo.insertOne({"_id":75}); ... Read More
To get the count of rows in which two or more specified values appear, let us first create a sample table:mysql> create table specifiedValuesDemo -> ( -> Value int, -> Value2 int, -> Value3 int -> ); Query OK, 0 rows affected (0.60 sec)Following is the query to insert some records in the table using insert command:mysql> insert into specifiedValuesDemo values(10, 15, 20); Query OK, 1 row affected (0.17 sec) mysql> insert into specifiedValuesDemo values(40, 10, 20); Query OK, 1 row affected (0.16 sec) ... Read More