Java Utililty Methods Swing Look and Feel

List of utility methods to do Swing Look and Feel

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Description

The list of methods to do Swing Look and Feel are organized into topic(s).

Method

voidapplyNimbusLaF()
apply Nimbus La F 
try {
    UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
    UIManager.put("nimbusSelectionBackground", new Color(173, 207, 231));
} catch (Exception e) {
    e.printStackTrace();
StringapplyStartupLookAndFeel(String desiredLafClassName)
Try to apply the specified look and feel. 
try {
    String clsName = desiredLafClassName;
    UIManager.setLookAndFeel(clsName);
    return clsName;
} catch (Exception e) {
try {
    String clsName;
...
voidcheckGTKLookAndFeel()
Look and feel improvement on Ubuntu http://stackoverflow.com/questions/3907047/how-to-change-the-default-font -size-in-the-swing-gtk-lookandfeel/31345102#31345102 
final LookAndFeel look = UIManager.getLookAndFeel();
if (!look.getID().equals("GTK"))
    return;
new JFrame();
new JButton();
new JComboBox<>();
new JRadioButton();
new JCheckBox();
...
booleancheckThemeLiscense(LookAndFeelInfo i)
A static method for blocking the Quaqua theme from working with any OS but OSX. 
String osName = System.getProperty("os.name").toLowerCase();
String suitableName = i.getName();
if (suitableName.startsWith("Quaqua") && !osName.startsWith("mac os x")) {
    return false;
return true;
booleancomputeIsLafAqua()
Computes and answers whether an Aqua look&feel is active. 
return UIManager.getLookAndFeel().getID().equals("Aqua");
voiddefaultLookAndFeel()
default Look And Feel 
try {
    for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
        if (DEFAULT_LOOK_AND_FEEL.equals(info.getName())) {
            UIManager.setLookAndFeel(info.getClassName());
            break;
} catch (Exception e) {
...
voidenableLafIfAvailable(String lafName)
Enables look and feel with specified name only if such LaF is available 
for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
    if (lafName.equals(info.getName())) {
        try {
            UIManager.setLookAndFeel(info.getClassName());
            break;
        } catch (Exception e) {
voidfixLnF()
fix Ln F 
final Object osName = System.getProperties().get("os.name");
if (!osName.equals("Mac OS X")) {
    loadPlasticLnF();
LookAndFeelInfo[]getAvailableLookAndFeels()
get Available Look And Feels 
return Arrays.copyOf(availableLookAndFeels, availableLookAndFeels.length);
ListgetAvailableLookAndFeels()
Returns a list of available Swing Look and Feels 
ArrayList<String> availableLookAndFeels = new ArrayList<>(5);
for (UIManager.LookAndFeelInfo lafInfo : UIManager.getInstalledLookAndFeels()) {
    availableLookAndFeels.add(lafInfo.getName());
return availableLookAndFeels;