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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object
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+--java.awt.Component
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+--java.awt.Label
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:
| Inner Class Summary | |
protected class |
Label.AccessibleAWTLabel
This class implements accessibility support for the Label class. |
| Inner classes inherited from class java.awt.Component |
Component.AccessibleAWTComponent |
| 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 |
| Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
| Constructor Summary | |
Label()
Constructs an empty label. |
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Label(String text)
Constructs a new label with the specified string of text, left justified. |
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Label(String text,
int alignment)
Constructs a new label that presents the specified string of text with the specified alignment. |
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| Method Summary | |
void |
addNotify()
Creates the peer for this label. |
AccessibleContext |
getAccessibleContext()
Gets the AccessibleContext associated with this Label. |
int |
getAlignment()
Gets the current alignment of this label. |
String |
getText()
Gets the text of this label. |
protected 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.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
public static final int LEFT
public static final int CENTER
public static final int RIGHT
| Constructor Detail |
public Label()
"".public Label(String text)
text - the string that the label presents.
A null value
will be accepted without causing a NullPointerException
to be thrown.
public Label(String text,
int alignment)
alignment are Label.LEFT,
Label.RIGHT, and Label.CENTER.text - the string that the label presents.
A null value
will be accepted without causing a NullPointerException
to be thrown.alignment - the alignment value.| Method Detail |
public void addNotify()
addNotify in class Componentjava.awt.ComponentComponent.isDisplayable(),
Component.removeNotify()public int getAlignment()
Label.LEFT, Label.RIGHT, and
Label.CENTER.setAlignment(int)public void setAlignment(int alignment)
Label.LEFT,
Label.RIGHT, and Label.CENTER.alignment - the alignment to be set.IllegalArgumentException - if an improper value for
alignment is given.getAlignment()public String getText()
null if
the text has been set to null.setText(java.lang.String)public void setText(String text)
text - the text that this label displays. If
text is null, it is
treated for display purposes like an empty
string "".getText()protected String paramString()
paramString in class Componentpublic AccessibleContext getAccessibleContext()
getAccessibleContext in interface AccessiblegetAccessibleContext in class Component
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JavaTM 2 Platform Std. Ed. v1.3 |
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