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Class java.awt.Label

java.lang.Object
    |
    +----java.awt.Component
            |
            +----java.awt.Label

public class Label
extends Component
A Label object is a component for placing text in a container. A label displays a single line of read-only text. The text can be changed by the application, but a user cannot edit it directly.

For example, the code . . .


 setLayout(new FlowLayout(FlowLayout.CENTER, 10, 10)); 
 add(new Label("Hi There!")); 
 add(new Label("Another Label"));
 

produces the following label:

Since:
JDK1.0

Field Summary
static int  CENTER
Indicates that the label should be centered.
static int  LEFT
Indicates that the label should be left justified.
static int  RIGHT
Indicates that the label should be right justified.
 
Fields inherited from class java.awt.Component
 BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
 

Constructor Summary
 Label()
Constructs an empty label.
 Label(String text)
Constructs a new label with the specified string of text, left justified.
 Label(String text, int alignment)
Constructs a new label that presents the specified string of text with the specified alignment.
 

Method Summary
void  addNotify()
Creates the peer for this label.
int  getAlignment()
Gets the current alignment of this label.
String  getText()
Gets the text of this label.
String  paramString()
Returns the parameter string representing the state of this label.
void  setAlignment(int alignment)
Sets the alignment for this label to the specified alignment.
void  setText(String text)
Sets the text for this label to the specified text.
 
Methods inherited from class java.awt.Component
 action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getColorModel, getComponentAt, getComponentAt, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getName, getParent, getPeer, getPreferredSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isDisplayable, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setCursor, setDropTarget, setEnabled, setFont, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, update, validate
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

LEFT

public static final int LEFT
Indicates that the label should be left justified.

CENTER

public static final int CENTER
Indicates that the label should be centered.

RIGHT

public static final int RIGHT
Indicates that the label should be right justified.
Constructor Detail

Label

public Label()
Constructs an empty label.

Label

public Label(String text)
Constructs a new label with the specified string of text, left justified.
Parameters:
text - the string that the label presents.

Label

public Label(String text,
             int alignment)
Constructs a new label that presents the specified string of text with the specified alignment.

Possible values for alignment are Label.LEFT, Label.RIGHT, and Label.CENTER.

Parameters:
text - the string that the label presents.
alignment - the alignment value.
Method Detail

addNotify

public void addNotify()
Creates the peer for this label. The peer allows us to modify the appearance of the label without changing its functionality.
Overrides:
addNotify in class Component

getAlignment

public int getAlignment()
Gets the current alignment of this label. Possible values are Label.LEFT, Label.RIGHT, and Label.CENTER.
See Also:
setAlignment

setAlignment

public void setAlignment(int alignment)
Sets the alignment for this label to the specified alignment. Possible values are Label.LEFT, Label.RIGHT, and Label.CENTER.
Parameters:
alignment - the alignment to be set.
Throws:
IllegalArgumentException - if an improper value for alignment is given.
See Also:
getAlignment

getText

public String getText()
Gets the text of this label.
Returns:
the text of this label.
See Also:
setText

setText

public void setText(String text)
Sets the text for this label to the specified text.
Parameters:
text - the text that this label presents.
See Also:
getText

paramString

protected String paramString()
Returns the parameter string representing the state of this label. This string is useful for debugging.
Returns:
the parameter string of this label.
Overrides:
paramString in class Component

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