How do I set a JLabel s background color

Question

In my JPanel  I set the background of a JLabel to a different color  I can see the word  Test  and it s blue  but the background doesn t change at all  How can I get it to show   this setBackground Color white   JLabel label   new JLabel  Test    label setForeground Color blue   label setBackground Color lightGray   this add label

User · Accepted Answer

Use  label setOpaque true     Otherwise the background is not painted  since the default of opaque is false for JLabel   From the JavaDocs      If true the component paints every pixel within its bounds  Otherwise  the component may not paint some or all of its pixels  allowing the underlying pixels to show through     For more information  read the Java Tutorial How to Use Labels

User · Answer

You must set the setOpaque true  to true other wise the background will not be painted to the form  I think from reading that if it is not set to true that it will paint some or not any of its pixels to the form  The background is transparent by default which seems odd to me at least but in the way of programming you have to set it to true as shown below         JLabel lb   new JLabel  Test          lb setBackground Color red         lb setOpaque true    lt --This line of code must be set to true or otherwise the    From the JavaDocs  setOpaque  public void setOpaque boolean isOpaque    If true the component paints every pixel within its bounds  Otherwise     the component may not paint some or all of its pixels  allowing the underlying    pixels to show through    The default value of this property is false for JComponent  However     the default value for this property on most standard JComponent subclasses      such as JButton and JTree  is look-and-feel dependent   Parameters  isOpaque - true if this component should be opaque See Also  isOpaque

User · Answer

For the Background  make sure you have imported java awt Color into your package   In your main method  i e  public static void main String   args   call the already imported method    JLabel name of your label new JLabel  the title of your label    name of your label setBackground Color the color you wish   name of your label setOpaque true     NB  Setting opaque will affect its visibility  Remember the case sensitivity in Java

User · Answer

The JLabel background is transparent by default  Set the opacity at true like that   label setOpaque true

[java] How do I set a JLabel's background color?

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