下面列出了怎么用java.awt.Label的API类实例代码及写法，或者点击链接到github查看源代码。
/**
* ������
*
* @param g
*/
public void drawContent(Graphics g) {
this.value = (int) Math.pow(2, level) + "";
g.setColor(Constant.COLOR_BLOCKS_ACTIVE[level - 1]);
Font f = new Font("���ź�", Font.BOLD, 60 - 5 * value.length());
g.setFont(f);
FontMetrics fm = new Label().getFontMetrics(f);
int xValueStart = x + (Constant.BLOCK_WIDTH - fm.stringWidth(value)) / 2;
int yValueStart = y+Constant.BLOCK_HEIGHT- (Constant.BLOCK_HEIGHT - fm.getHeight()) / 2-fm.getDescent();
// ������
g.fillRoundRect(x, y, Constant.BLOCK_WIDTH, Constant.BLOCK_WIDTH, 10, 10);
g.setColor(Color.BLACK);
// ������
g.drawString(value, xValueStart, yValueStart);
// //���Լ�¼
// f = new Font("���ź�", Font.BOLD, 20);
// g.setFont(f);
// String s = "(" + x + "," + y + ")" + moveCount;
// g.drawString(s, x, y + 20);
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
public void start() {
//Get things going. Request focus, set size, et cetera
setSize(200, 200);
setVisible(true);
validate();
final Image image = new MultiResolutionCursor();
int center = sizes[0] / 2;
Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
image, new Point(center, center), "multi-resolution cursor");
Frame frame = new Frame("Test Frame");
frame.setSize(300, 300);
frame.setLocation(300, 50);
frame.add(new Label("Move cursor here"));
frame.setCursor(cursor);
frame.setVisible(true);
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
public void start() {
//Get things going. Request focus, set size, et cetera
setSize(200, 200);
setVisible(true);
validate();
final Image image = new MultiResolutionCursor();
int center = sizes[0] / 2;
Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
image, new Point(center, center), "multi-resolution cursor");
Frame frame = new Frame("Test Frame");
frame.setSize(300, 300);
frame.setLocation(300, 50);
frame.add(new Label("Move cursor here"));
frame.setCursor(cursor);
frame.setVisible(true);
}
public void start() {
//Get things going. Request focus, set size, et cetera
setSize(200, 200);
setVisible(true);
validate();
final Image image = new MultiResolutionCursor();
int center = sizes[0] / 2;
Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
image, new Point(center, center), "multi-resolution cursor");
Frame frame = new Frame("Test Frame");
frame.setSize(300, 300);
frame.setLocation(300, 50);
frame.add(new Label("Move cursor here"));
frame.setCursor(cursor);
frame.setVisible(true);
}
private void makeWindow() {
dialog = new java.awt.Dialog(IJ.getInstance(), "Loading...", false);
dialog.setUndecorated(true);
bytes = new Label("Loaded: 0 bytes ");
speed = new Label("Speed: 0 bytes/s ");
time = new Label ("Elapsed time: 0 s ");
dialog.setLayout(new GridLayout(3,1));
dialog.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowDeactivated(java.awt.event.WindowEvent we) {
dialog.toFront();
}
});
dialog.add(time);
dialog.add(bytes);
dialog.add(speed);
java.awt.Dimension screen = dialog.getToolkit().getScreenSize();
dialog.pack();
dialog.setLocation(screen.width/2 - dialog.getWidth()/2, screen.height/2 - dialog.getHeight()/2);
//dialog.setVisible(true);
}
public void start() {
//Get things going. Request focus, set size, et cetera
setSize(200, 200);
setVisible(true);
validate();
final Image image = new MultiResolutionCursor();
int center = sizes[0] / 2;
Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
image, new Point(center, center), "multi-resolution cursor");
Frame frame = new Frame("Test Frame");
frame.setSize(300, 300);
frame.setLocation(300, 50);
frame.add(new Label("Move cursor here"));
frame.setCursor(cursor);
frame.setVisible(true);
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
private JPanel addFeatureDataSummary(PeakListRow row) {
JPanel featureDataSummary = new JPanel(new GridLayout(0, 1));
featureDataSummary.setBackground(Color.WHITE);
featureDataSummary.add(new Label("Feature: " + row.getID()));
if (row.getPreferredPeakIdentity() != null)
featureDataSummary.add(new Label("Identity: " + row.getPreferredPeakIdentity().getName()));
if (row.getComment() != null)
featureDataSummary.add(new Label("Comment: " + row.getComment()));
featureDataSummary.add(new Label("Raw File: " + rawFiles[0].getName()));
featureDataSummary.add(new Label("Intensity: "
+ MZmineCore.getConfiguration().getIntensityFormat().format(feature.getHeight())));
featureDataSummary.add(new Label(
"Area: " + MZmineCore.getConfiguration().getIntensityFormat().format(feature.getArea())));
featureDataSummary.add(new Label("Charge: " + feature.getCharge()));
featureDataSummary.add(
new Label("m/z: " + MZmineCore.getConfiguration().getMZFormat().format(feature.getMZ())));
featureDataSummary.add(new Label(
"Retention time: " + MZmineCore.getConfiguration().getRTFormat().format(feature.getRT())));
featureDataSummary.add(new Label("Asymmetry factor "
+ MZmineCore.getConfiguration().getRTFormat().format(feature.getAsymmetryFactor())));
featureDataSummary.add(new Label("Tailing Factor factor "
+ MZmineCore.getConfiguration().getRTFormat().format(feature.getTailingFactor())));
featureDataSummary.add(new Label("Status: " + feature.getFeatureStatus()));
return featureDataSummary;
}
public void start() {
//Get things going. Request focus, set size, et cetera
setSize(200, 200);
setVisible(true);
validate();
final Image image = new BaseMultiResolutionImage(
createResolutionVariant(0),
createResolutionVariant(1),
createResolutionVariant(2),
createResolutionVariant(3)
);
int center = sizes[0] / 2;
Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
image, new Point(center, center), "multi-resolution cursor");
Frame frame = new Frame("Test Frame");
frame.setSize(300, 300);
frame.setLocation(300, 50);
frame.add(new Label("Move cursor here"));
frame.setCursor(cursor);
frame.setVisible(true);
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
/**
* Converts {@code Label} alignment constant to the {@code JLabel} constant.
* If wrong Label alignment provided returns default alignment.
*
* @param alignment {@code Label} constant.
*
* @return {@code JLabel} constant.
*/
private static int convertAlignment(final int alignment) {
switch (alignment) {
case Label.CENTER:
return SwingConstants.CENTER;
case Label.RIGHT:
return SwingConstants.RIGHT;
default:
return SwingConstants.LEFT;
}
}
/**
* Converts {@code Label} alignment constant to the {@code JLabel} constant.
* If wrong Label alignment provided returns default alignment.
*
* @param alignment {@code Label} constant.
*
* @return {@code JLabel} constant.
*/
private static int convertAlignment(final int alignment) {
switch (alignment) {
case Label.CENTER:
return SwingConstants.CENTER;
case Label.RIGHT:
return SwingConstants.RIGHT;
default:
return SwingConstants.LEFT;
}
}
public Radius1Listener( final Label label, final float min, final float max, final int scrollbarSize, final Scrollbar radiusScrollbar1, final Scrollbar radiusScrollbar2, final Label radiusText2 )
{
this.label = label;
this.min = min;
this.max = max;
this.scrollbarSize = scrollbarSize;
this.radiusScrollbar1 = radiusScrollbar1;
this.radiusScrollbar2 = radiusScrollbar2;
this.radiusText2 = radiusText2;
}
public DitherControls(DitherTest app, int s, int e, DitherMethod type,
boolean vertical) {
applet = app;
setLayout(dcLayout);
add(new Label(vertical ? "Vertical" : "Horizontal"));
add(choice = new Choice());
for (DitherMethod m : DitherMethod.values()) {
choice.addItem(m.toString().substring(0, 1)
+ m.toString().substring(1).toLowerCase());
}
choice.select(type.ordinal());
add(start = new CardinalTextField(Integer.toString(s), 4));
add(end = new CardinalTextField(Integer.toString(e), 4));
}
public DitherControls(DitherTest app, int s, int e, DitherMethod type,
boolean vertical) {
applet = app;
setLayout(dcLayout);
add(new Label(vertical ? "Vertical" : "Horizontal"));
add(choice = new Choice());
for (DitherMethod m : DitherMethod.values()) {
choice.addItem(m.toString().substring(0, 1)
+ m.toString().substring(1).toLowerCase());
}
choice.select(type.ordinal());
add(start = new CardinalTextField(Integer.toString(s), 4));
add(end = new CardinalTextField(Integer.toString(e), 4));
}
/**
* Converts {@code Label} alignment constant to the {@code JLabel} constant.
* If wrong Label alignment provided returns default alignment.
*
* @param alignment {@code Label} constant.
*
* @return {@code JLabel} constant.
*/
private static int convertAlignment(final int alignment) {
switch (alignment) {
case Label.CENTER:
return SwingConstants.CENTER;
case Label.RIGHT:
return SwingConstants.RIGHT;
default:
return SwingConstants.LEFT;
}
}
public DitherControls(DitherTest app, int s, int e, DitherMethod type,
boolean vertical) {
applet = app;
setLayout(dcLayout);
add(new Label(vertical ? "Vertical" : "Horizontal"));
add(choice = new Choice());
for (DitherMethod m : DitherMethod.values()) {
choice.addItem(m.toString().substring(0, 1)
+ m.toString().substring(1).toLowerCase());
}
choice.select(type.ordinal());
add(start = new CardinalTextField(Integer.toString(s), 4));
add(end = new CardinalTextField(Integer.toString(e), 4));
}
/**
* Converts {@code Label} alignment constant to the {@code JLabel} constant.
* If wrong Label alignment provided returns default alignment.
*
* @param alignment {@code Label} constant.
*
* @return {@code JLabel} constant.
*/
private static int convertAlignment(final int alignment) {
switch (alignment) {
case Label.CENTER:
return SwingConstants.CENTER;
case Label.RIGHT:
return SwingConstants.RIGHT;
default:
return SwingConstants.LEFT;
}
}
/**
* Loading an image via a MediaTracker
*
* @param image
* @throws InterruptedException
* @throws IOException
*/
public static void load(Image image) throws InterruptedException,
IOException {
MediaTracker tracker = new MediaTracker(new Label()); // any component
// will do
tracker.addImage(image, 0);
tracker.waitForID(0);
if (tracker.isErrorID(0))
throw new IOException("error loading image");
}
public Sigma2Listener( final float min, final float max, final int scrollbarSize, final Scrollbar sigmaScrollbar2, final Label sigma2Label )
{
this.min = min;
this.max = max;
this.scrollbarSize = scrollbarSize;
this.sigmaScrollbar2 = sigmaScrollbar2;
this.sigma2Label = sigma2Label;
}
static void setSplashText(String x)
{
Label tempL = splashText;
if (tempL != null)
tempL.setText(x);
if (Sage.DBG) System.out.println("Splash: " + x);
SageTV.writeOutWatchdogFile();
}
public LoginRequester(Frame parent, String title, String user_label, String password_label,
String posText_, String negText) {
super(parent, title, true);
setLayout(new GridBagLayout());
posText = posText_;
add(new Label(user_label), Awt.constraints(false, GridBagConstraints.HORIZONTAL));
u_text = new TextField(30);
try{u_text.setText(System.getProperty("user.name",""));}
catch(Exception e) {}
add(u_text, Awt.constraints(true, GridBagConstraints.HORIZONTAL));
add(new Label(password_label), Awt.constraints(false, GridBagConstraints.HORIZONTAL));
p_text = new TextField(30);
p_text.setEchoChar('*');
add(p_text, Awt.constraints(true, GridBagConstraints.HORIZONTAL));
Button pos = new Button(posText);
add(pos, Awt.constraints(false, 10, 4, GridBagConstraints.HORIZONTAL));
pos.addActionListener(this);
Button neg = new Button(negText);
add(neg, Awt.constraints(true, 10, 4, GridBagConstraints.HORIZONTAL));
neg.addActionListener(this);
pack();
}
public EmailConfirmationDialog(Frame parent, String[] messages, String textArea) {
super(parent, true);
setTitle("Confirmation Dialog");
Font font = new Font("Courier", Font.PLAIN, 12);
setFont(font);
int rows = messages.length;
Panel textPanel = new Panel();
textPanel.setLayout(new GridLayout(rows,1));
for(int i = 0; i < rows; i++){
textPanel.add(new Label(messages[i]));
}
add("North", textPanel);
Panel textAreaPanel = new Panel();
TextArea ta = new TextArea(12,60);
ta.setText(textArea);
textAreaPanel.add(ta);
add("Center", textAreaPanel);
Panel p = new Panel();
p.setLayout(new FlowLayout());
Button yes = new Button("Yes");
yes.addActionListener(this);
p.add(yes);
Button no = new Button("No");
no.addActionListener(this);
p.add(no);
add("South", p);
setLocation(100, 200);
pack();
}
private void updatePromptLabel(final int index, final String newLabel, final Color color) {
try {
synchronized (prompt.getTreeLock()) {
final Label label = ((Label) prompt.getComponent(index));
label.setAlignment(Label.RIGHT);
label.setText(newLabel);
label.setForeground(color);
}
} catch (final ArrayIndexOutOfBoundsException | ClassCastException ignored) {
// Do nothing: index is not valid
}
}
public static void main(String args[]) {
// Create a frame and center it relative to the
// screen
Frame f = new Frame("This should be centered");
f.add(new Label("Press Ctrl-C from command line to exit"));
f.setSize(f.getPreferredSize());
f.pack();
center(null, f);
f.show();
}
public DitherControls(DitherTest app, int s, int e, DitherMethod type,
boolean vertical) {
applet = app;
setLayout(dcLayout);
add(new Label(vertical ? "Vertical" : "Horizontal"));
add(choice = new Choice());
for (DitherMethod m : DitherMethod.values()) {
choice.addItem(m.toString().substring(0, 1)
+ m.toString().substring(1).toLowerCase());
}
choice.select(type.ordinal());
add(start = new CardinalTextField(Integer.toString(s), 4));
add(end = new CardinalTextField(Integer.toString(e), 4));
}