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Ankith Reddy
182 Views
Let’s say, we have selected a range of rows using addRowSelectionInterval() as shown in the demo screenshot −Now, we will deselect the above shown selected rows using removeRowSelectionInterval(). The range is to be set here for interval i.e rows 3 to 6 (index 2 to 5) will get deselected −table.removeRowSelectionInterval(2, ... Read More
Ankith Reddy
1K+ Views
To set all the values in a field to 0, use the update command −update yourTableName set yourColumnName=0;Let us first create a table −mysql> create table DemoTable ( Number int ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> ... Read More
Ankith Reddy
125 Views
To add a separator, use the addSeparator() method. Let us first create a toolbar −JToolBar toolbar = new JToolBar();Now, we will create some components and set a separator to separate them as shown below −toolbar.add(new JTextArea(" Add name here")); toolbar.add(new JButton("Submit Name")); toolbar.addSeparator(); toolbar.add(new JTextArea(" Add age here")); toolbar.add(new JButton("Submit ... Read More
Ankith Reddy
82 Views
Yes, we can create nested TitledBorder. Let us first create a component for which we will set the border −JLabel label = new JLabel();Now, we will create the 1st border −TitledBorder border = BorderFactory.createTitledBorder("Top Border"); border.setTitlePosition(TitledBorder.TOP);Following is how we will creater border 2. We have set the 1st border here ... Read More
Ankith Reddy
50 Views
The element in HTML is used to set keyboard input. Since the element deprecated now, therefore use instead.Note: The tag is not supported in HTML.Let us now see an example to implement the tag in HTML−Example Live Demo Shortcut Keys Use the following shortcut keys: ... Read More
Ankith Reddy
97 Views
To set TitleBorder direction, you need to use the constants and set it for border. For example, for direction center −TitledBorder border = BorderFactory.createTitledBorder("Border"); border.setTitlePosition(TitledBorder.CENTER);Above, we have set the setTitlePosition() for the direction.The following is an example to set TitledBorder direction in Java −Examplepackage my; import java.awt.BorderLayout; import java.awt.Container; import ... Read More
Ankith Reddy
465 Views
OpenCV is one of the best python package for image processing. Also like signals carry noise attached to it, images too contain different types of noise mainly from the source itself (Camera sensor). Python OpenCV package provides ways for image smoothing also called blurring. This is what we are going ... Read More
Ankith Reddy
104 Views
Use the distinct() for this, since it finds the distinct values for a specified field across a single collection or view and returns the results in an array.Let us first create a collection with documents −> db.projectionListDemo.insertOne({"_id":"1", "Subject":["MongoDB", "MySQL", "Java"]}); { "acknowledged" : true, "insertedId" : "1" } > db.projectionListDemo.insertOne({"_id":"2", ... Read More
Ankith Reddy
588 Views
To find a node in a JTree component, use the getNextMatch() method. Here, wer are trying to find a node that begins with character “A”. The search begins from the node set below with begnRow variable −int begnRow = 0; String prefix = "A"; TreePath treePath = tree.getNextMatch(prefix, begnRow, Position.Bias.Forward);We ... Read More
Ankith Reddy
61 Views
The result FALSE for is FileHidingEnabled() means the hidden files are displayed in the FileChooser. The following will display FALSE since file isn’t hidden −JFileChooser file = new JFileChooser(); file.setMultiSelectionEnabled(false); file.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES); file.setFileHidingEnabled(false); boolean res = file.isFileHidingEnabled();Above, at first, we have displayed the file by setting hidden to be FALSE −file.setFileHidingEnabled(false);The following ... Read More