关于JAVA的collation排序的程序

主要摘抄至corejava2

现文本框中输入一词点击Add按钮把它添加到一个单词列表中。

package com.corejava.collection;import java.awt.EventQueue;import java.awt.GridBagLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.text.Collator;import java.util.ArrayList;import java.util.Arrays;import java.util.Collections;import java.util.Comparator;import java.util.List;import java.util.Locale;import javax.swing.JButton;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextField;/** * This program demonstrates collating strings under various locales. *  * @author root 2014-12-09 */public class CollectionTest {public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubJFrame frame = new CollectionFrame();frame.setTitle("CollectionTest");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setVisible(true);}});}}/* * This frame contains combo boxes to pick a locale,collection strength and * decomposition rules. a text field and button to add new strings,and a text * area to list the collated strings. */class CollectionFrame extends JFrame {/** * 序列化 */private static final long serialVersionUID = 1L;private Collator collator = Collator.getInstance(Locale.getDefault());private List<String> strings = new ArrayList<>();private Collator currentCollator;private Locale[] locales;private JComboBox<String> localeCombo = new JComboBox<>();private JTextField newWord = new JTextField(20);private JTextArea sortedWords = new JTextArea(20, 20);private JButton addButton = new JButton("add");private EnumCombo strengthCombo = new EnumCombo(Collator.class, "Primary","Secondary", "Tertiary", "Identical");private EnumCombo decompositionCombo = new EnumCombo(Collator.class,"Canonical Decomposition", "Full Decomposition", "No Decomposition");public CollectionFrame() {// TODO Auto-generated constructor stubsetLayout(new GridBagLayout());add(new JLabel("Local"), new GBC(0, 0).setAnchor(GBC.EAST));add(new JLabel("Stringth"), new GBC(0, 1).setAnchor(GBC.EAST));add(new JLabel("Decomposition"), new GBC(0, 2).setAnchor(GBC.EAST));add(addButton, new GBC(0, 3).setAnchor(GBC.EAST));add(localeCombo, new GBC(1, 0).setAnchor(GBC.WEST));add(decompositionCombo, new GBC(1, 1).setAnchor(GBC.WEST));add(newWord, new GBC(1, 3).setFill(GBC.HORIZONTAL));add(new JScrollPane(sortedWords), new GBC(0, 4, 2, 1).setFill(GBC.BOTH));locales = (Locale[]) Collator.getAvailableLocales().clone();Arrays.sort(locales, new Comparator<Locale>() {@Overridepublic int compare(Locale o1, Locale o2) {// TODO Auto-generated method stubreturn collator.compare(o1.getDisplayName(),o2.getDisplayName());}});for (Locale loc : locales)localeCombo.addItem(loc.getDisplayName());localeCombo.setSelectedItem(Locale.getDefault().getDisplayName());strings.add("America");strings.add("able");strings.add("Zulu");strings.add("zebra");strings.add("\u00C5ngstr\u00F6m");strings.add("A\u030angstro\u0308m");strings.add("Angstrom");strings.add("Able");strings.add("office");strings.add("o\uFB03ce");strings.add("Java\u2122");strings.add("JavaTM");addButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubstrings.add(newWord.getText());updateDisplay();}});ActionListener listener = new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubupdateDisplay();}};localeCombo.addActionListener(listener);strengthCombo.addActionListener(listener);decompositionCombo.addActionListener(listener);pack();}/* * Updates the display and collates the strings according to the user * setting. */public void updateDisplay() {Locale currentLocale = locales[localeCombo.getSelectedIndex()];localeCombo.setLocale(currentLocale);currentCollator = Collator.getInstance(currentLocale);currentCollator.setStrength(strengthCombo.getValue());currentCollator.setDecomposition(decompositionCombo.getValue());Collections.sort(strings, currentCollator);sortedWords.setText("");for (int i = 0; i < strings.size(); i++) {String s = strings.get(i);if (i > 0 && currentCollator.compare(s, strings.get(i - 1)) == 0)sortedWords.append("= ");sortedWords.append(s + "\n");}// 调整此窗口的大小，以适合其子组件的首选大小和布局pack();}}

package com.corejava.collection;import java.util.*;import javax.swing.*;/** * A combo box that lets users choose from among static field values whose names * are given in the constructor. *  * @author root 2014-12-09 */public class EnumCombo extends JComboBox<String> {/** *  */private static final long serialVersionUID = 1L;private Map<String, Integer> table = new TreeMap<>();/** * Constructs an EnumCombo. *  * @param cl *            a class * @param labels *            an array of static field names of cl */public EnumCombo(Class<?> cl, String... labels) {for (String label : labels) {String name = label.toUpperCase().replace(' ', '_');int value = 0;try {java.lang.reflect.Field f = cl.getField(name);value = f.getInt(cl);} catch (Exception e) {label = "(" + label + ")";}table.put(label, value);addItem(label);}setSelectedItem(labels[0]);}/** * Returns the value of the field that the user selected. *  * @return the static field value */public int getValue() {return table.get(getSelectedItem());}}

package com.corejava.collection;import java.awt.*;/** * This class simplifies the use of the GridBagConstraints class. */public class GBC extends GridBagConstraints {/** *  */private static final long serialVersionUID = 1L;/** * Constructs a GBC with a given gridx and gridy position and all other grid * bag constraint values set to the default. *  * @param gridx *            the gridx position * @param gridy *            the gridy position */public GBC(int gridx, int gridy) {this.gridx = gridx;this.gridy = gridy;}/** * Constructs a GBC with given gridx, gridy, gridwidth, gridheight and all * other grid bag constraint values set to the default. *  * @param gridx *            the gridx position * @param gridy *            the gridy position * @param gridwidth *            the cell span in x-direction * @param gridheight *            the cell span in y-direction */public GBC(int gridx, int gridy, int gridwidth, int gridheight) {this.gridx = gridx;this.gridy = gridy;this.gridwidth = gridwidth;this.gridheight = gridheight;}/** * Sets the anchor. *  * @param anchor *            the anchor value * @return this object for further modification */public GBC setAnchor(int anchor) {this.anchor = anchor;return this;}/** * Sets the fill direction. *  * @param fill *            the fill direction * @return this object for further modification */public GBC setFill(int fill) {this.fill = fill;return this;}/** * Sets the cell weights. *  * @param weightx *            the cell weight in x-direction * @param weighty *            the cell weight in y-direction * @return this object for further modification */public GBC setWeight(double weightx, double weighty) {this.weightx = weightx;this.weighty = weighty;return this;}/** * Sets the insets of this cell. *  * @param distance *            the spacing to use in all directions * @return this object for further modification */public GBC setInsets(int distance) {this.insets = new Insets(distance, distance, distance, distance);return this;}/** * Sets the insets of this cell. *  * @param top *            the spacing to use on top * @param left *            the spacing to use to the left * @param bottom *            the spacing to use on the bottom * @param right *            the spacing to use to the right * @return this object for further modification */public GBC setInsets(int top, int left, int bottom, int right) {this.insets = new Insets(top, left, bottom, right);return this;}/** * Sets the internal padding *  * @param ipadx *            the internal padding in x-direction * @param ipady *            the internal padding in y-direction * @return this object for further modification */public GBC setIpad(int ipadx, int ipady) {this.ipadx = ipadx;this.ipady = ipady;return this;}}

实验结果如下图：