Set frame.dispose() on the click of a button to close JFrame. At first create a button and frame − , Now, close the JFrame on the click of the above button with Action Listener − , The following is an example to close JFrame on the click of a Button − , When you will click on the button “Click to Close”, the frame will close.

At first, create a JFrame − , Now, change the background color of the JFrame − , The following is an example to change JFrame background color − ,

To create a vertical ProgressBar, use the following property − , Set it like this − , The following is an example to create a vertical ProgressBar − ,

To disable a JLabel, use the setEnabled() method − , The following is an example to disable a JLabel − ,

Let’s say the following is our String List − , Now, map to add string to each element − , Above, we have added “Sports” and “Outdoor” strings to each element. The following is an example to Map and add string value to each element in Java − , ,

At first, we have set the stream − , Now to Map double to int Object, use mapToObj − , The following is an example to Map double to int Object with mapToInt and mapToObj − , ,

Let’s say the following is our String List − , Now filter the string value with starting letter − , The following is an example to filter string value with starting letter − , ,

Let’s first create a String list − , To filter String list by starting value, use filter() and startsWith() − , The following is an example to filter string list by starting value − , ,

Use the createLineBorder() method to ad line border to JLabel − , Above, we have set the line border to color orange. The following is an example to add line border to JLabel − ,

To hold multiline of text, set HTML under JLabel − , The above will create multiline text in the JLabel − , The following is an example to create JLabel to hold multiline of text − ,