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JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes:
"C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/awt/Checkbox.java
/* * @(#)Checkbox.java 1.43 01/12/10 * * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.awt; import java.awt.peer.CheckboxPeer; import java.awt.event.*; import java.io.ObjectOutputStream; import java.io.ObjectInputStream; import java.io.IOException; /** * A check box is a graphical component that can be in either an * "on" (<code>true</code>) or "off" (<code>false</code>) state. * Clicking on a check box changes its state from * "on" to "off," or from "off" to "on." * <p> * The following code example creates a set of check boxes in * a grid layout: * <p> * <hr><blockquote><pre> * setLayout(new GridLayout(3, 1)); * add(new Checkbox("one", null, true)); * add(new Checkbox("two")); * add(new Checkbox("three")); * </pre></blockquote><hr> * <p> * This image depicts the check boxes and grid layout * created by this code example: * <p> * <img src="images-awt/Checkbox-1.gif" * ALIGN=center HSPACE=10 VSPACE=7> * <p> * The button labeled <code>one</code> is in the "on" state, and the * other two are in the "off" state. In this example, which uses the * <code>GridLayout</code> class, the states of the three check * boxes are set independently. * <p> * Alternatively, several check boxes can be grouped together under * the control of a single object, using the * <code>CheckboxGroup</code> class. * In a check box group, at most one button can be in the "on" * state at any given time. Clicking on a check box to turn it on * forces any other check box in the same group that is on * into the "off" state. * * @version 1.43 12/10/01 * @author Sami Shaio * @see java.awt.GridLayout * @see java.awt.CheckboxGroup * @since JDK1.0 */ public class Checkbox extends Component implements ItemSelectable { /** * The label of the Checkbox. */ String label; /** * The state of the Checkbox. */ boolean state; /** * The check box group. */ CheckboxGroup group; transient ItemListener itemListener; private static final String base = "checkbox"; private static int nameCounter = 0; /* * JDK 1.1 serialVersionUID */ private static final long serialVersionUID = 7270714317450821763L; /** * Helper function for setState and CheckboxGroup.setSelectedCheckbox * Should remain package-private. */ void setStateInternal(boolean state) { this.state = state; CheckboxPeer peer = (CheckboxPeer)this.peer; if (peer != null) { peer.setState(state); } } /** * Creates a check box with no label. The state of this * check box is set to "off," and it is not part of any * check box group. * @since JDK1.0 */ public Checkbox() { this("", false, null); } /** * Creates a check box with the specified label. The state * of this check box is set to "off," and it is not part of * any check box group. * @param label a string label for this check box, * or <code>null</code> for no label. * @since JDK1.0 */ public Checkbox(String label) { this(label, false, null); } /** * Creates a check box with the specified label. The state * of this check box is as specified by the <code>state</code> * argument, and it is not part of any check box group. * @param label a string label for this check box, * or <code>null</code> for no label. * @param state the initial state of this check box. * @since JDK1.0 */ public Checkbox(String label, boolean state) { this(label, state, null); } /** * Creates a check box with the specified label, in the specified * check box group, and set to the specified state. * @param label a string label for this check box, * or <code>null</code> for no label. * @param state the initial state of this check box. * @param group a check box group for this check box, * or <code>null</code> for no group. * @since JDK1.1 */ public Checkbox(String label, boolean state, CheckboxGroup group) { this.label = label; this.state = state; this.group = group; if (state && (group != null)) { group.setSelectedCheckbox(this); } } /** * Constructs a Checkbox with the specified label, set to the * specified state, and in the specified check box group. */ public Checkbox(String label, CheckboxGroup group, boolean state) { this(label, state, group); } /** * Construct a name for this component. Called by getName() when the * name is null. */ String constructComponentName() { return base + nameCounter++; } /** * Creates the peer of the Checkbox. The peer allows you to change the * look of the Checkbox without changing its functionality. * @see java.awt.Toolkit#createCheckbox(java.awt.Checkbox) * @see java.awt.Component#getToolkit() * @since JDK1.0 */ public void addNotify() { synchronized (getTreeLock()) { if (peer == null) peer = getToolkit().createCheckbox(this); super.addNotify(); } } /** * Gets the label of this check box. * @return the label of this check box, or <code>null</code> * if this check box has no label. * @see java.awt.Checkbox#setLabel * @since JDK1.0 */ public String getLabel() { return label; } /** * Sets this check box's label to be the string argument. * @param label a string to set as the new label, or * <code>null</code> for no label. * @see java.awt.Checkbox#getLabel * @since JDK1.0 */ public synchronized void setLabel(String label) { this.label = label; CheckboxPeer peer = (CheckboxPeer)this.peer; if (peer != null) { peer.setLabel(label); } } /** * Determines whether this check box is in the "on" or "off" state. * The boolean value <code>true</code> indicates the "on" state, * and <code>false</code> indicates the "off" state. * @return the state of this check box, as a boolean value. * @see java.awt.Checkbox#setState * @since JDK1.0 */ public boolean getState() { return state; } /** * Sets the state of this check box to the specified state. * The boolean value <code>true</code> indicates the "on" state, * and <code>false</code> indicates the "off" state. * @param state the boolean state of the check box. * @see java.awt.Checkbox#getState * @since JDK1.0 */ public void setState(boolean state) { /* Cannot hold check box lock when calling group.setSelectedCheckbox. */ CheckboxGroup group = this.group; if (group != null) { if (state) { group.setSelectedCheckbox(this); } else if (group.getSelectedCheckbox() == this) { state = true; } } setStateInternal(state); } /** * Returns the an array (length 1) containing the checkbox * label or null if the checkbox is not selected. * @see ItemSelectable */ public Object[] getSelectedObjects() { if (state) { Object[] items = new Object[1]; items[0] = label; return items; } return null; } /** * Determines this check box's group. * @return this check box's group, or <code>null</code> * if the check box is not part of a check box group. * @see java.awt.Checkbox#setCheckboxGroup * @since JDK1.0 */ public CheckboxGroup getCheckboxGroup() { return group; } /** * Sets this check box's group to be the specified check box group. * If this check box is already in a different check box group, * it is first taken out of that group. * @param g the new check box group, or <code>null</code> * to remove this check box from any check box group. * @see java.awt.Checkbox#getCheckboxGroup * @since JDK1.0 */ public void setCheckboxGroup(CheckboxGroup g) { CheckboxGroup group = this.group; if (group != null) { group.setSelectedCheckbox(null); } /* Locking check box above could cause deadlock with * CheckboxGroup's setSelectedCheckbox method. */ synchronized (this) { this.group = g; CheckboxPeer peer = (CheckboxPeer)this.peer; if (peer != null) { peer.setCheckboxGroup(g); } } } /** * Adds the specified item listener to receive item events from * this check box. * @param l the item listener. * @see java.awt.event.ItemEvent * @see java.awt.event.ItemListener * @see java.awt.Checkbox#removeItemListener * @since JDK1.1 */ public synchronized void addItemListener(ItemListener l) { itemListener = AWTEventMulticaster.add(itemListener, l); newEventsOnly = true; } /** * Removes the specified item listener so that the item listener * no longer receives item events from this check box. * @param l the item listener. * @see java.awt.event.ItemEvent * @see java.awt.event.ItemListener * @see java.awt.Checkbox#addItemListener * @since JDK1.1 */ public synchronized void removeItemListener(ItemListener l) { itemListener = AWTEventMulticaster.remove(itemListener, l); } // REMIND: remove when filtering is done at lower level boolean eventEnabled(AWTEvent e) { if (e.id == ItemEvent.ITEM_STATE_CHANGED) { if ((eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 || itemListener != null) { return true; } return false; } return super.eventEnabled(e); } /** * Processes events on this check box. * If the event is an instance of <code>ItemEvent</code>, * this method invokes the <code>processItemEvent</code> method. * Otherwise, it calls its superclass's <code>processEvent</code> method. * @param e the event. * @see java.awt.event.ItemEvent * @see java.awt.Checkbox#processItemEvent * @since JDK1.1 */ protected void processEvent(AWTEvent e) { if (e instanceof ItemEvent) { processItemEvent((ItemEvent)e); return; } super.processEvent(e); } /** * Processes item events occurring on this check box by * dispatching them to any registered * <code>ItemListener</code> objects. * <p> * This method is not called unless item events are * enabled for this component. Item events are enabled * when one of the following occurs: * <p><ul> * <li>An <code>ItemListener</code> object is registered * via <code>addItemListener</code>. * <li>Item events are enabled via <code>enableEvents</code>. * </ul> * @param e the item event. * @see java.awt.event.ItemEvent * @see java.awt.event.ItemListener * @see java.awt.Checkbox#addItemListener * @see java.awt.Component#enableEvents * @since JDK1.1 */ protected void processItemEvent(ItemEvent e) { if (itemListener != null) { itemListener.itemStateChanged(e); } } /** * Returns the parameter string representing the state of * this check box. This string is useful for debugging. * @return the parameter string of this check box. * @since JDK1.0 */ protected String paramString() { String str = super.paramString(); String label = this.label; if (label != null) { str += ",label=" + label; } return str + ",state=" + state; } /* Serialization support. */ private int checkboxSerializedDataVersion = 1; private void writeObject(ObjectOutputStream s) throws java.io.IOException { s.defaultWriteObject(); AWTEventMulticaster.save(s, itemListenerK, itemListener); s.writeObject(null); } private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException { s.defaultReadObject(); Object keyOrNull; while(null != (keyOrNull = s.readObject())) { String key = ((String)keyOrNull).intern(); if (itemListenerK == key) addItemListener((ItemListener)(s.readObject())); else // skip value for unrecognized key s.readObject(); } } }
⏎ java/awt/Checkbox.java
Or download all of them as a single archive file:
File name: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
2018-11-17, 176912👍, 0💬
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