Java style font size

Modifying font size and style in a Java Swing program

Other individuals have also noted this, as it is clearly stated in the JavaDoc for Font. If you wish to adjust the font size for a particular component, follow Solution 3. Ensure that the component is a type of object and not a class. Next, create an instance of the Font class and provide three arguments in the constructor: the desired font, the font style (called using a specific class), and the font size (an integer value).

Change the font style, size in a Java swing appliation

As I develop my Java Swing email application, I am uncertain of how to allow users to modify the font while composing an email. To address this concern, I have implemented a JComboBox containing all available font options.

Would it be appropriate to incorporate getSelectedItem() and attach an actionListener to the JComboBox to transfer this information to the JTextArea? Alternatively, are there any other methods available? Below is the code I am currently using.

String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames(); JComboBox comboBox = new JComboBox(fonts);// create a combo box with the array comboBox.setFont(new Font("Times New Roman", Font.PLAIN, 12));// set the font comboBox.setBounds(21, 6, 193, 25);// set size and location add(comboBox); 

What is the best way to change the font of all text fields based on the item selected in the comboBox?

If my understanding is correct, you will be able to discover a functional illustration of your request within a basic main method.

To simplify, I have utilized a combo box only for choosing the font name. However, it would enhance the user experience to add two additional combo boxes for selecting font size and style (such as bold). PLAIN, ITALIC

Yes, the usual approach is to attach an actionListener to comboBox to alter the font when the user interacts with it. However, you can also detect keyboard keys pressed or develop alternative methods to recognize the user’s desire to modify the font. As far as I’m aware, the action listener shown in the demonstration is the easiest method.

package fontchooser; import java.awt.Font; import java.awt.GraphicsEnvironment; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextArea; public class ComboFont < // Put this in other two combo-boxes if you want to make these selectable by user public static int default_size = 16; public static int default_style = Font.PLAIN; public static void main(String[] args) < String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames(); GridBagLayout layout = new GridBagLayout(); layout.columnWidths = new int[] ; layout.rowHeights = new int[] ; JFrame container = new JFrame(); container.setLayout(layout); container.setBounds(150,150,400,400); container.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JComboBox comboFontNames = new JComboBox(fonts); JTextArea textArea = new JTextArea(); JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(textArea); GridBagConstraints comboContraints = new GridBagConstraints(); comboContraints.gridx = 0; comboContraints.gridy = 0; // This only set font to display on combo comboFontNames.setFont(new Font("Times New Roman", Font.PLAIN, 12)); container.add(comboFontNames, comboContraints); GridBagConstraints scrollerContraints = new GridBagConstraints(); scrollerContraints.gridx = 0; scrollerContraints.gridy = 1; scrollerContraints.gridwidth = 400; scrollerContraints.fill = GridBagConstraints.BOTH; container.add(scrollPane, scrollerContraints); // Variant of action listener with lambda (since java 8) comboFontNames.addActionListener((e) -> < String selectedFamilyName = (String)comboFontNames.getSelectedItem(); Font selectedFont = new Font(selectedFamilyName, default_style, default_size); textArea.setFont(selectedFont); textArea.repaint(); >); container.setVisible(true); > > 

I Hope this is what you needed! bye

Change the font style, size in a Java swing appliation, In order to keep it simple, I’ve used only a combo box for font name selection, but it would be nice to put two other combos in order to make font size and style (BOLD, PLAIN, ITALIC) selectable too. Basically yes, the most common way is to bind an actionListener to comboBox, in order to change font when the comboBox has user’s interaction.

Are there any built-in methods in Java to increase Font size?

Is there any provision in Java programming language to enlarge the font size using pre-defined functions?

You can specify font size using the Font class.

To generate a font, the process typically involves performing the following actions.

Font f = new Font("serif", Font.PLAIN, fontSize); 

The size of your Font will be determined by the fontSize parameter.

Modifying the size of a Font object is not possible. To achieve a similar outcome, create a new Font object with a different size using the deriveFont(size) method, which will be almost identical to the original Font .

Font biggerFont = existingFont.deriveFont(bigNumber); 

You can obtain a Font of varying dimensions by implementing the subsequent approach.

Font original = // some font Font bigger = original.deriveFont(newSize); 

The data type of newSize is a float and not an int, as has been highlighted by others in the Font’s JavaDoc documentation.

If you intend to modify the font size of a particular JLabel , you can perform the following action:

label.setFont(label.getFont().deriveFont(newSize)); 

Ensure that newSize meets the criteria of being a float rather than a int .

My understanding of the question is about increasing the font size for Swing globally. Although there is no inherent method to achieve this, you can customize the values in the UIManager class before creating any Swing elements to accomplish it.

To achieve this, I utilize a multiplier parameter that is passed into my application. This parameter enables me to multiply all existing fonts by a specified percentage. For instance, if I pass in 150, the code will multiply all fonts by 150%. Here’s the code implementation.

public static void initializeFontSize() < String fontSizeParam = System.getProperty("myapp.fontSize"); if (fontSizeParam != null) < float multiplier = Integer.parseInt(fontSizeParam) / 100.0f; UIDefaults defaults = UIManager.getDefaults(); int i = 0; for (Enumeration e = defaults.keys(); e.hasMoreElements(); i++) < Object key = e.nextElement(); Object value = defaults.get(key); if (value instanceof Font) < Font font = (Font) value; int newSize = Math.round(font.getSize() * multiplier); if (value instanceof FontUIResource) < defaults.put(key, new FontUIResource(font.getName(), font.getStyle(), newSize)); >else < defaults.put(key, new Font(font.getName(), font.getStyle(), newSize)); >> > > > 

Swing — Are there any built-in methods in Java to increase, The Font class allows you to specify font size. So, to create a font you do something like this: Font f = new Font («serif», Font.PLAIN, fontSize); The fontSize parameter will determine the size of your Font. You can’t actually change the size of an existing Font object.

Using setFont in Java

In this write-up, we’ll study the utilization of the setFont() technique, which is derived from java.awt.Container , in the javax.swing.JFrame category. As the moniker indicates, this approach modifies the font of the elements belonging to JFrame .

Using setFont() to Set a New Font in JFrame

Here, we assign a different font to a specific component identified as JFrame .

Initially, an object of JFrame is formed along with two labels that are of JLabel variety. The labels are initialized with their respective text.

An object named myFont1 is instantiated using Font . The constructor method takes three arguments: the font to set, the font style accessed through Font class, and the font size as an int type value.

We instantiate a new object called Font and assign it a unique font value. Then, we create a separate object named myFont2 with a distinct font value. Finally, we invoke the setFont() function and pass in both JLabel objects as arguments.

Firstly, using the setBounds() function, we determine the position and size of the components. Then, we add them to JFrame using add() . Finally, we adjust the size and visibility of the JFrame .

import javax.swing.*; import java.awt.*; public class Main < public static void main(String[] args) < JFrame jFrame = new JFrame("Set Font Example"); JLabel jLabel1, jLabel2; jLabel1 = new JLabel("Label with Serif Font"); jLabel2 = new JLabel("Label with Arial Font"); Font myFont1 = new Font("Serif", Font.BOLD, 12); jLabel1.setFont(myFont1); Font myFont2 = new Font("Arial", Font.BOLD, 12); jLabel2.setFont(myFont2); jLabel1.setBounds(80, 100, 120, 30); jLabel2.setBounds(80, 80, 120, 30); jFrame.add(jLabel1); jFrame.add(jLabel2); jFrame.setSize(300, 300); jFrame.setLayout(null); jFrame.setVisible(true); >> 

Using setFont() and getFont().deriveFont() to Set a Style in the Existing Font

As demonstrated in the earlier instance, setFont() can be utilized to establish a fresh font. However, it’s worth noting that this method can also be employed to modify the style of the font in the JFrame component.

Initially, we fetch the font of the component through component.getFont() . Afterward, we invoke deriveFont() function, which takes the desired style as an argument. To make the font Italic on JLabel , we provide Font.ITALIC as a parameter.

import javax.swing.*; import java.awt.*; public class Main < public static void main(String[] args) < JFrame f = new JFrame("Set Font Example"); JLabel jLabel1; jLabel1 = new JLabel("Label with Italic Style"); jLabel1.setFont(jLabel1.getFont().deriveFont(Font.ITALIC)); jLabel1.setBounds(80, 100, 120, 30); f.add(jLabel1); f.setSize(300, 300); f.setLayout(null); f.setVisible(true); >> 

Using setFont() and Font.createFont() to Set a Custom Font

In contrast to the first program where the font was already set within the class, we have utilized a custom font in this particular instance.

In this example, we obtain the personalized font by downloading and saving it in the main directory of our project. The font file we utilize is referred to as oswald.ttf .

To obtain the font file, we first define a JLabel variable and set it to the value of BufferedInputStream . Then, we utilize an object of FileInputStream that accepts the path of the font file as an input parameter. Consequently, we receive an object of InputStream .

To generate a fresh font, we utilize the createFont() function found in the Font category. The font resource type is passed as the initial argument, while the InputStream is passed as the second argument. The custom font is then implemented to the JLabel component by means of the deriveFont() process.

Having completed the aforementioned steps, we can now incorporate the component into JFrame . As a result, the end product will display the customized font.

package sample; import javax.swing.*; import java.awt.*; import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; public class Main < public static void main(String[] args) < JFrame f = new JFrame("Set Font Example"); JLabel jLabel; jLabel = new JLabel("Label with a Custom Font"); try < InputStream inputStream = new BufferedInputStream( new FileInputStream("oswald.ttf")); Font font = Font.createFont(Font.TRUETYPE_FONT, inputStream); jLabel.setFont(font.deriveFont(Font.BOLD, 12f)); >catch (FontFormatException | IOException e) < e.printStackTrace(); >jLabel.setBounds(80, 100, 120, 30); f.add(jLabel); f.setSize(300, 300); f.setLayout(null); f.setVisible(true); > > 

Java Swing

How to set font size in java swing Code Example, Java queries related to “how to set font size in java swing” java set font size; set font size java; set font size of custom font …

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How to change JLabel font style and size in Java

Hello folks! In this tutorial, we will discuss how to change the JLabel font style and font size in Java. I will discuss thoroughly each of them. Firstly, let us discuss changing of JLabel font style in Java.

How to change JLabel font style in Java

We import the Java Swing and Java AWT libraries into our code and use them.

• Java Swing library is used for creating lightweight windows and it provides various powerful components such as JFrame, JLabel, etc.
• Java AWT Library contains all the necessary classes needed to develop a GUI (Graphical User Interface).

Let us walk through the code and understand it better.

Firstly, We are creating a JFrame with the title “JLabel Font Style Example”. The setBounds() function is used to specify the bounds of the frame for easier visualization. The first two parameters are the (x,y) i.e., the location of the frame, and the other two parameters indicate the height and width of the frame respectively.

Now, we create a container to add our objects to the frame. We create a JLabel object with the title “Welcome!” and name it obj1. We use Object.setFont() function to set the Font Style of our text. For, the first object, the font style is set to “Arial”.

Then, we create another JLabel object (obj2) the same as before but with a font style as “Times New Roman” and add both objects to the container frame and display it.

Let’s see the code:

//Necessary Imports import java.awt.*; import javax.swing.*; public class FontSyle extends JFrame < public static void main(String[] args) < JFrame frame = new JFrame("JLabel Font Style Example"); // Creating a new JFrame with a title frame.setLayout(null); // To terminate the default flow layout frame.setVisible(true); // To display the frame frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); // To Terminate JFrame and the program on close frame.setBounds(100, 200, 400, 400); // To set the bounds of the frame. Container c = frame.getContentPane(); //To get content pane layer and add objects in the frame. //Creating First JLabel Object JLabel obj1 = new JLabel("Welcome!"); //Creating a JLabel with title as Welcome obj1.setBounds(100, 100, 300, 30); //Setting the bounds of the label. obj1.setFont(new Font("Arial", Font.PLAIN, 30)); //Creating an Arial Font Style with size 30 //Creating Second Jlabel Object with different font JLabel obj2 = new JLabel("Welcome!"); //Creating same JLabel title as before. obj2.setBounds(100, 200, 300, 30); //Setting the same bounds as before. obj2.setFont(new Font("Times New Roman", Font.PLAIN, 30)); //Creating an Times New Roman Font Style with size 30 //Adding the objects in the container frame c.add(obj1); c.add(obj2); >>

From, the above output we can see that the first text is in “Arial” font and the second text in “Times New Roman” font with the same font size as 30. Thus, in this way, we can change the JLabel font style in Java.

How to change JLabel font size in Java

We use various parameters of the Font() function to change the font size of JLabel. The Font() function has three parameters as Font Style, Font Weight, and Font Size. We change the Font Size parameter to change the size of the JLabel Font.

The use of the Font() function is shown below:

Object.setFont(new Font("Font-Style", Font-Weight, Font Size));

We use the same code as above keeping font styles the same while changing only the font size. We create a JLabel object (obj1) and assign a font size of 16 and another JLabel object (obj2) with a font size of 30.

Let’s see the code:

//Necessary Imports import java.awt.*; import javax.swing.*; public class FontSize extends JFrame < public static void main(String[] args) < JFrame frame = new JFrame("JLabel Font Size Example"); // Creating a new JFrame with a title frame.setLayout(null); // To terminate the default flow layout frame.setVisible(true); // To display the frame frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); // To Terminate JFrame and program on close frame.setBounds(100, 200, 400, 400); // To set the bounds of the frame. Container c = frame.getContentPane(); //To get content pane layer and add objects in the frame. //Creating First JLabel Object JLabel obj1 = new JLabel("Welcome!"); //Creating a JLabel with title as Welcome obj1.setBounds(100, 100, 300, 30); //Setting the bounds of the label. obj1.setFont(new Font("Arial", Font.PLAIN, 16)); //Creating an Arial Font Style with size 16 //Creating Second Jlabel Object with different font JLabel obj2 = new JLabel("Welcome!"); //Creating same JLabel title as before. obj2.setBounds(100, 200, 300, 30); //Setting the same bounds as before. obj2.setFont(new Font("Arial", Font.PLAIN, 30)); //Creating an Arial Font Style but with size 30 //Adding the objects in the container frame c.add(obj1); c.add(obj2); >>

From, the above output we can see that the first text is in “Arial” font style with a size of 16 and the second text with the same font style but with a font size of 30. Thus, in this way, we can change the JLabel font size in Java.

Thanks for reading. I hope you found this post useful!

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