How do you add a border line in Java?

How do you add a border line in Java?

Create JLabel with border

  1. Create a class that extends JFrame .
  2. Create a new JLabel .
  3. Use BorderFactory. createLineBorder(Color. BLUE, 5) to create a new Border with specific color and line width.
  4. Use JLabel. setBorder to set the border of the JLabel component.
  5. Use add to add the JLabel to the frame.

How do you use setBorder?

To put a border around a JComponent , you use its setBorder method. You can use the BorderFactory class to create most of the borders that Swing provides. If you need a reference to a border — say, because you want to use it in multiple components — you can save it in a variable of type Border .

How do I get the size of a JFrame?

“jframe get window size” Code Answer

  1. Dimension screenSize = Toolkit. getDefaultToolkit(). getScreenSize();
  2. ​
  3. // the screen height.
  4. screenSize. getHeight();
  5. ​
  6. // the screen width.
  7. screenSize. getWidth();

What is a JLabel?

JLabel is a class of java Swing . JLabel is used to display a short string or an image icon. JLabel can display text, image or both . JLabel is only a display of text or image and it cannot get focus . JLabel is inactive to input events such a mouse focus or keyboard focus.

How do I change font size in JLabel?

How to Change Font Size and Font Style of a JLabel

  1. JLabel label = new JLabel(“This is a label!”); label. setFont(new Font(“Serif”, Font. BOLD, 20));
  2. label. setForeground(Color. RED. label.setForeground(Color.RED);
  3. label. setBackground(Color. ORANGE. label.
  4. label = new JLabel(“This is a label!”, SwingConstants. CENTER);

Is JFrame an interface?

Whenever a Graphical Use Interface (GUI) is created with Java Swing functionality, a container is required where components like labels, buttons, textfields are added to create a Graphical User Interface(GUI) and is known as JFrame.

How does Java calculate setBounds?

The setBounds() method needs four arguments. The first two arguments are x and y coordinates of the top-left corner of the component, the third argument is the width of the component and the fourth argument is the height of the component.

How do you center text in Java?

To center the string for output we use the StringUtils. center() method from the Apache Commons Lang library. This method will center-align the string str in a larger string of size using the default space character (‘ ‘).

How do I resize a JFrame?

You can change the size of the JFrame by simply placing the cursor in the corners and dragging it. Or if you press the resize option next to close(X) in the upper right corner, it will be enlarged to full-screen size. This happens because the resize is set to “true” by default.

How do I change the resolution of a JFrame?

Firstly, we use getScreenSize() method of the Java Toolkit class to get the resolution of the screen in dots per inch. Secondly, we use the frame. setSize() to set the dimensions that we receive from the getScreenSize() method. This method contains width as the first parameter and height as the second parameter.

How do I create a border in Java?

The API for using borders falls into two categories: Create a line border. The first argument is a java.awt.Color object that specifies the color of the line. The optional second argument specifies the width in pixels of the line. Create an etched border.

How to set line border color and width with Java?

How to set Line Border color and width with Java? To set Line Border color and width, use the LineBorder. At first, set a panel wherein we need to set the line border −

Is it possible to set a border on a JComponent?

Although technically you can set the border on any object that inherits from JComponent, the look and feel implementation of many standard Swing components doesn’t work well with user-set borders.

How do I create a bordered container in jpanel?

Here is an example of code that creates a bordered container: JPanel pane = new JPanel (); pane.setBorder (BorderFactory.createLineBorder (Color.black)); Here’s a picture of the container, which contains a label component. The black line drawn by the border marks the edge of the container.