介绍
类容器是AWT容器的超类。容器对象可以包含其他AWT组件。
类的声明
以下是声明的java.awt.Container类：
public class Container extends Component
类的构造函数
| S.N. | 构造函数与说明 |
|---|---|
| 1 |
Container() This creates a new Container. |
类方法
| S.N. | 方法及说明 |
|---|---|
| 1 |
Component add(Component comp) Appends the specified component to the end of this container. |
| 2 |
Component add(Component comp, int index) Adds the specified component to this container at the given position. |
| 3 |
void add(Component comp, Object constraints) Adds the specified component to the end of this container. |
| 4 |
void add(Component comp, Object constraints, int index) Adds the specified component to this container with the specified constraints at the specified index. |
| 5 |
Component add(String name, Component comp) Adds the specified component to this container. |
| 6 |
void addContainerListener(ContainerListener l) Adds the specified container listener to receive container events from this container. |
| 7 |
protected void addImpl(Component comp, Object constraints, int index) Adds the specified component to this container at the specified index. |
| 8 |
void addNotify() Makes this Container displayable by connecting it to a native screen resource. |
| 9 |
void addPropertyChangeListener(PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list. |
| 10 |
void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list for a specific property. |
| 11 |
void applyComponentOrientation(ComponentOrientation o) Sets the ComponentOrientation property of this container and all components contained within it. |
| 12 |
boolean areFocusTraversalKeysSet(int id) Returns whether the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Container. |
| 13 |
int countComponents() Deprecated. As of JDK version 1.1, replaced by getComponentCount(). |
| 14 |
void deliverEvent(Event e) Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent e) |
| 15 |
void doLayout() Causes this container to lay out its components. |
| 16 |
Component findComponentAt(int x, int y) Locates the visible child component that contains the specified position. |
| 17 |
Component findComponentAt(Point p) Locates the visible child component that contains the specified point. |
| 18 |
float getAlignmentX() Returns the alignment along the x axis. |
| 19 |
float getAlignmentY() Returns the alignment along the y axis. |
| 20 |
Component getComponent(int n) Gets the nth component in this container. |
| 21 |
Component getComponentAt(int x, int y) Locates the component that contains the x,y position. |
| 22 |
Component getComponentAt(Point p) Gets the component that contains the specified point. |
| 23 |
int getComponentCount() Gets the number of components in this panel. |
| 24 |
Component[] getComponents() Gets all the components in this container. |
| 25 |
int getComponentZOrder(Component comp) Returns the z-order index of the component inside the container. |
| 26 |
ContainerListener[] getContainerListeners() Returns an array of all the container listeners registered on this container. |
| 27 |
Set<AWTKeyStroke> getFocusTraversalKeys(int id) Returns the Set of focus traversal keys for a given traversal operation for this Container. |
| 28 |
FocusTraversalPolicy getFocusTraversalPolicy() Returns the focus traversal policy that will manage keyboard traversal of this Container's children, or null if this Container is not a focus cycle root. |
| 29 |
Insets getInsets() Determines the insets of this container, which indicate the size of the container's border. |
| 30 |
LayoutManager getLayout() Gets the layout manager for this container. |
| 31 |
<T extends EventListener> T[] getListeners(Class<T> listenerType) Returns an array of all the objects currently registered as FooListeners upon this Container. |
| 32 |
Dimension getMaximumSize() Returns the maximum size of this container. |
| 33 |
Dimension getMinimumSize() Returns the minimum size of this container. |
| 34 |
Point getMousePosition(boolean allowChildren) Returns the position of the mouse pointer in this Container's coordinate space if the Container is under the mouse pointer, otherwise returns null. |
| 35 |
Dimension getPreferredSize() Returns the preferred size of this container. |
| 36 |
Insets insets() Deprecated. As of JDK version 1.1, replaced by getInsets(). |
| 37 |
void invalidate() Invalidates the container. |
| 38 |
boolean isAncestorOf(Component c) Checks if the component is contained in the component hierarchy of this container. |
| 39 |
boolean isFocusCycleRoot() Returns whether this Container is the root of a focus traversal cycle. |
| 40 |
boolean isFocusCycleRoot(Container container) Returns whether the specified Container is the focus cycle root of this Container's focus traversal cycle. |
| 41 |
boolean isFocusTraversalPolicyProvider() Returns whether this container provides focus traversal policy. |
| 42 |
boolean isFocusTraversalPolicySet() Returns whether the focus traversal policy has been explicitly set for this Container. |
| 43 |
void layout() Deprecated. As of JDK version 1.1, replaced by doLayout(). |
| 44 |
void list(PrintStream out, int indent) Prints a listing of this container to the specified output stream. |
| 45 |
void list(PrintWriter out, int indent) Prints out a list, starting at the specified indentation, to the specified print writer. |
| 46 |
Component locate(int x, int y) Deprecated. As of JDK version 1.1, replaced by getComponentAt(int, int). |
| 47 |
Dimension minimumSize() Deprecated. As of JDK version 1.1, replaced by getMinimumSize(). |
| 48 |
void paint(Graphics g) Paints the container. |
| 49 |
void paintComponents(Graphics g) Paints each of the components in this container. |
| 50 |
protected String paramString() Returns a string representing the state of this Container. |
| 51 |
Dimension preferredSize() Deprecated. As of JDK version 1.1, replaced by getPreferredSize(). |
| 52 |
void print(Graphics g) Prints the container. |
| 53 |
void printComponents(Graphics g) Prints each of the components in this container. |
| 54 |
protected void processContainerEvent(ContainerEvent e) Processes container events occurring on this container by dispatching them to any registered ContainerListener objects. |
| 55 |
protected void processEvent(AWTEvent e) Processes events on this container. |
| 56 |
void remove(Component comp) Removes the specified component from this container. |
| 57 |
void remove(int index) Removes the component, specified by index, from this container. |
| 58 |
void removeAll() Removes all the components from this container. |
| 59 |
void removeContainerListener(ContainerListener l) Removes the specified container listener so it no longer receives container events from this container. |
| 60 |
void removeNotify() Makes this Container undisplayable by removing its connection to its native screen resource. |
| 61 |
void setComponentZOrder(Component comp, int index) Moves the specified component to the specified z-order index in the container. |
| 62 |
void setFocusCycleRoot(boolean focusCycleRoot) Sets whether this Container is the root of a focus traversal cycle. |
| 63 |
void setFocusTraversalKeys(int id, Set<? extends AWTKeyStroke> keystrokes) Sets the focus traversal keys for a given traversal operation for this Container. |
| 64 |
void setFocusTraversalPolicy(FocusTraversalPolicy policy) Sets the focus traversal policy that will manage keyboard traversal of this Container's children, if this Container is a focus cycle root. |
| 65 |
void setFocusTraversalPolicyProvider(boolean provider) Sets whether this container will be used to provide focus traversal policy. |
| 66 |
void setFont(Font f) Sets the font of this container. |
| 67 |
void setLayout(LayoutManager mgr) Sets the layout manager for this container. |
| 68 |
void transferFocusBackward() Transfers the focus to the previous component, as though this Component were the focus owner. |
| 69 |
void transferFocusDownCycle() Transfers the focus down one focus traversal cycle. |
| 70 |
void update(Graphics g) Updates the container. |
| 71 |
void validate() Validates this container and all of its subcomponents. |
| 72 |
protected void validateTree() Recursively descends the container tree and recomputes the layout for any subtrees marked as needing it (those marked as invalid). |
继承的方法
这个类继承的方法从以下类：
-
java.awt.Component
-
java.lang.Object
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AWT 容器（Containers）
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Panel类