Java JTextpane选项卡大小

import javax.swing.*;import javax.swing.text.*;public class TabExample {    public static void main(String[] args) {        JTextPane pane = new JTextPane();        TabStop[] tabs = new TabStop[4];        tabs[0] = new TabStop(60, TabStop.ALIGN_RIGHT, TabStop.LEAD_NONE);        tabs[1] = new TabStop(100, TabStop.ALIGN_LEFT, TabStop.LEAD_NONE);        tabs[2] = new TabStop(200, TabStop.ALIGN_CENTER, TabStop.LEAD_NONE);        tabs[3] = new TabStop(300, TabStop.ALIGN_DECIMAL, TabStop.LEAD_NONE);        TabSet tabset = new TabSet(tabs);        StyleContext sc = StyleContext.getDefaultStyleContext();        AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY,        StyleConstants.TabSet, tabset);        pane.setParagraphAttributes(aset, false);        pane.setText("trighttlefttcentertdecimaln" + "t1t1t1t1.0n"        + "t200.002t200.002t200.002t200.002n"        + "t.33t.33t.33t.33n");        Jframe frame = new Jframe("TabExample");        frame.setContentPane(new JScrollPane(pane));        frame.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);        frame.setSize(360, 120);        frame.setVisible(true);    }}