java justify jlabel text align center

// JLabel(String text, int horizontalAlignment) 

import javax.swing.SwingConstants;
import javax.swing.JLabel;

Jlabel label1 = new Jlabel("Test");
label1.setHorizontalAlignment(SwingConstants.LEFT); // align left 
label1.setHorizontalAlignment(SwingConstants.CENTER); // align center 
label1.setHorizontalAlignment(SwingConstants.RIGHT);