Let’s first create a List string:List list = Arrays.asList("David", "Tom", "Ken", "Yuvraj", "Gayle");Now transform the above list to upper case:list.stream().map(players -> players.toUpperCase())To display, use forEach():list.stream().map(players -> players.toUpperCase()) .forEach(players -> System.out.print(players + ""));The following is an example to transform List string to upper case:Exampleimport java.util.Arrays; import java.util.List; public class Demo { ... Read More

Llet us first create a JPanel and set titled border:JPanel panel = new JPanel(); panel.setBorder(BorderFactory.createTitledBorder("Demo Panel"));Now to create Empty Border:JPanel panel2 = new JPanel(new BorderLayout()); panel2.add(panel, BorderLayout.CENTER); panel2.setBorder(BorderFactory.createEmptyBorder(100, 100, 100, 100));The following is an example to leave space with EmptyBorder in Java Swing:Exampleimport java.awt.BorderLayout; import java.awt.Dimension; import javax.swing.BorderFactory; import javax.swing.JFrame; ... Read More

Here, we are creating soft beven border on JComboBox:JComboBox comboBox = new JComboBox(list);Now, set bevel border:comboBox.setBorder(new SoftBevelBorder(BevelBorder.LOWERED));The following is an example to use soft bevel border in Swing:Exampleimport java.awt.Font; import java.awt.GridBagLayout; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.BevelBorder; import javax.swing.border.SoftBevelBorder; public class SwingDemo {    static final String list[] ... Read More

JDBC provides support for almost all the SQL datatypes Whenever the JDBC driver receives a call from a Java application it converts the Java datatypes in it to the corresponding SQL data types. The conversion process follows default mapping. Following is the list of data types supported by JDBC and ... Read More

The set() method of the AbstractList class is used to replace the element at the specified position in this list with the specified element. It returns the element that gets replaced.The syntax is as follows:public E set(int index, E ele)Here, the parameter index is the index of the element to ... Read More

The hashCode() method of AbstractList class returns the hash code value for this list.The syntax is as follows:public int hashCode()To work with the AbstractList class, import the following package:import java.util.AbstractList;The following is an example to implement hashCode() method of the AbstractlList class in Java:Example Live Demoimport java.util.ArrayList; import java.util.AbstractList; public class ... Read More

A BLOB is binary large object that can hold a variable amount of data with a maximum length of 65535 characters.These are used to store large amounts of binary data, such as images or other types of files. Fields defined as TEXT also hold large amounts of data. The difference ... Read More

You can use $where operator along with find() method to compare two fields in MongoDB. The syntax is as follows:db.yourCollectionName.find({$where:”yourCondition”}).pretty();To understand the above syntax, let us create a collection with some documents. The query to create a collection with documents is as follows:>db.compareTwoFields.insert({"Id":1, "FullName":{"FirstName":"John", "LastName":"Smith"}, "BranchName":"ComputerScience"}); WriteResult({ "nInserted" : 1 ... Read More

The clear() method of the AbstractCollection class is used to remove all the elements from this collection. This makes the collection empty.The syntax is as follows:public void clear()To work with AbstractCollection class in Java, import the following package:import java.util.AbstractCollection;First, create AbstractCollection and add some elements using the add() method:AbstractCollection absCollection ... Read More

CLOB stands for Character Large Object in general, an SQL Clob is a built-in datatype and is used to store large amount of textual data. Using this datatype, you can store data up to 2, 147, 483, 647 characters.The java.sql.Clob interface of the JDBC API represents the CLOB datatype. Since ... Read More