How to let the content in JComboBox display in the center?

问题

Currently I have this JComboBox, how can I get to center the content inside it?

String[] strs = new String[]{"15158133110", "15158133124", "15158133458"};
JComboBox com = new JComboBox(strs);

回答1:

You need to create a Renderer then apply it to the JComboBox

DefaultListCellRenderer dlcr = new DefaultListCellRenderer(); 
dlcr.setHorizontalAlignment(DefaultListCellRenderer.CENTER); 
com.setRenderer(dlcr); 

also import this,

import javax.swing.DefaultListCellRenderer; 

回答2:

((JLabel)jComboBox1.getRenderer()).setHorizontalAlignment(SwingConstants.CENTER);

Try This

来源：https://stackoverflow.com/questions/12084188/how-to-let-the-content-in-jcombobox-display-in-the-center