我希望在这段代码中从循环中看到接近 200,000 行(196,608)的输出。它只打印一行。任何人都可以发现错误吗?
import java.awt.*;
import java.util.*;
import javax.swing.*;
class SwingWorkerUnicodeTest {
private String[] fontNameArray;
private JLabel output = new JLabel("Processing..");
private JProgressBar progressBar = new JProgressBar();
class CodePointDetailWorker extends SwingWorker<Object, Object> {
private ArrayList<Character.UnicodeBlock> unicodeBlockNames;
private ArrayList<Character.UnicodeScript> unicodeScripts;
private int[] glyphCount = new int[fontNameArray.length];
public CodePointDetailWorker() {
progressBar.setVisible(true);
Arrays.fill(glyphCount, 0);
}
@Override
protected Void doInBackground() throws Exception {
// Check for for the first 3 planes. The next 11 are unassigned
int pS = 3*65536;
for (int kk = 0; kk < pS; kk++) {
System.out.println("doInBackground " + kk + " " + pS);
doForEveryCodePoint(kk);
}
return null;
}
@Override
public void done() {
output.setText("Done!");
}
private final void doForEveryCodePoint(final int codePoint) {
Character.UnicodeBlock block = Character.UnicodeBlock.of(codePoint);
if (block != null && !unicodeBlockNames.contains(block)) {
unicodeBlockNames.add(block);
}
Character.UnicodeScript us = Character.UnicodeScript.of(codePoint);
if (us == null || us.toString() == null) {
} else {
if (!unicodeScripts.contains(us)) {
unicodeScripts.add(us);
}
}
// fonts - test for points in all 6 defined blocks.
for (int ii = 0; ii < fontNameArray.length; ii++) {
Font f = new Font(fontNameArray[ii], Font.PLAIN, 16);
if (f.canDisplay(codePoint)) {
glyphCount[ii]++;
}
}
}
}
public SwingWorkerUnicodeTest() {
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
fontNameArray = ge.getAvailableFontFamilyNames();
JPanel gui = new JPanel(new BorderLayout());
gui.add(progressBar, BorderLayout.CENTER);
gui.add(output, BorderLayout.PAGE_END);
CodePointDetailWorker cpdw = new CodePointDetailWorker();
cpdw.execute();
JOptionPane.showMessageDialog(null, gui);
}
public static void main(String[] args) {
Runnable r = new Runnable() {
@Override
public void run() {
new SwingWorkerUnicodeTest();
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
}
编辑
固定代码,基于前 2 个答案的建议。
它现在都实现了报告错误的重写方法,但初始化了..much 输出的数组并在进度条中显示进度。
import java.awt.*;
import java.util.*;
import javax.swing.*;
class SwingWorkerUnicodeTest {
private JLabel output = new JLabel("Processing..");
// Check for for the first 3 planes. The next 11 are unassigned
int pS = 3 * 65536;
private JProgressBar progressBar = new JProgressBar(0, pS);
class CodePointDetailWorker extends SwingWorker<Object, Object> {
private ArrayList<Character.UnicodeBlock> unicodeBlockNames;
private ArrayList<Character.UnicodeScript> unicodeScripts;
private int[] glyphCount;
private String[] fontNameArray;
public CodePointDetailWorker(String[] fontNameArray) {
this.fontNameArray = fontNameArray;
progressBar.setVisible(true);
glyphCount = new int[fontNameArray.length];
Arrays.fill(glyphCount, 0);
unicodeBlockNames = new ArrayList<Character.UnicodeBlock>();
unicodeScripts = new ArrayList<Character.UnicodeScript>();
}
@Override
protected Void doInBackground() throws Exception {
for (int kk = 0; kk < pS; kk++) {
if (kk % 500 == 0) {
progressBar.setValue(kk);
}
doForEveryCodePoint(kk);
}
progressBar.setValue(0);
return null;
}
@Override
public void done() {
try {
get();
output.setText("Done!");
} catch (Exception ex) {
ex.printStackTrace();
output.setText("Bad: " + ex.getMessage());
}
}
private final void doForEveryCodePoint(final int codePoint) {
Character.UnicodeBlock block = Character.UnicodeBlock.of(codePoint);
if (block != null && !unicodeBlockNames.contains(block)) {
unicodeBlockNames.add(block);
}
Character.UnicodeScript us = Character.UnicodeScript.of(codePoint);
if (us == null || us.toString() == null) {
} else {
if (!unicodeScripts.contains(us)) {
unicodeScripts.add(us);
}
}
// fonts - test for points in all 6 defined blocks.
for (int ii = 0; ii < fontNameArray.length; ii++) {
Font f = new Font(fontNameArray[ii], Font.PLAIN, 16);
if (f.canDisplay(codePoint)) {
glyphCount[ii]++;
}
}
}
}
public SwingWorkerUnicodeTest(String[] names) {
JPanel gui = new JPanel(new BorderLayout());
gui.add(progressBar, BorderLayout.CENTER);
gui.add(output, BorderLayout.PAGE_END);
CodePointDetailWorker cpdw = new CodePointDetailWorker(names);
cpdw.execute();
JOptionPane.showMessageDialog(null, gui);
}
public static void main(String[] args) {
Runnable r = new Runnable() {
@Override
public void run() {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] fontNames = ge.getAvailableFontFamilyNames();
new SwingWorkerUnicodeTest(fontNames);
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
}