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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/Choice.java
/* * @(#)Choice.java 1.49 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.util.*; import java.awt.peer.ChoicePeer; import java.awt.event.*; import java.io.ObjectOutputStream; import java.io.ObjectInputStream; import java.io.IOException; /** * The <code>Choice</code> class presents a pop-up menu of choices. * The current choice is displayed as the title of the menu. * <p> * The following code example produces a pop-up menu: * <p> * <hr><blockquote><pre> * Choice ColorChooser = new Choice(); * ColorChooser.add("Green"); * ColorChooser.add("Red"); * ColorChooser.add("Blue"); * </pre></blockquote><hr> * <p> * After this choice menu has been added to a panel, * it appears as follows in its normal state: * <p> * <img src="images-awt/Choice-1.gif" * ALIGN=center HSPACE=10 VSPACE=7> * <p> * In the picture, <code>"Green"</code> is the current choice. * Pushing the mouse button down on the object causes a menu to * appear with the current choice highlighted. * <p> * @version 1.49 12/10/01 * @author Sami Shaio * @author Arthur van Hoff * @since JDK1.0 */ public class Choice extends Component implements ItemSelectable { /** * The items for the Choice. */ Vector pItems; /** * The index of the current choice for this Choice. */ int selectedIndex = -1; transient ItemListener itemListener; private static final String base = "choice"; private static int nameCounter = 0; /* * JDK 1.1 serialVersionUID */ private static final long serialVersionUID = -4075310674757313071L; /** * Creates a new choice menu. The menu initially has no items in it. * <p> * By default, the first item added to the choice menu becomes the * selected item, until a different selection is made by the user * by calling one of the <code>select</code> methods. * @see java.awt.Choice#select(int) * @see java.awt.Choice#select(java.lang.String) * @since JDK1.0 */ public Choice() { pItems = new Vector(); } /** * Construct a name for this component. Called by getName() when the * name is null. */ String constructComponentName() { return base + nameCounter++; } /** * Creates the Choice's peer. This peer allows us to change the look * of the Choice without changing its functionality. * @see java.awt.Toolkit#createChoice(java.awt.Choice) * @see java.awt.Component#getToolkit() * @since JDK1.0 */ public void addNotify() { synchronized (getTreeLock()) { if (peer == null) peer = getToolkit().createChoice(this); super.addNotify(); } } /** * Returns the number of items in this <code>Choice</code> menu. * @see java.awt.Choice#getItem * @since JDK1.1 */ public int getItemCount() { return countItems(); } /** * @deprecated As of JDK version 1.1, * replaced by <code>getItemCount()</code>. */ public int countItems() { return pItems.size(); } /** * Gets the string at the specified index in this * <code>Choice</code> menu. * @param index the index at which to begin. * @see java.awt.Choice#getItemCount * @since JDK1.0 */ public String getItem(int index) { return (String)pItems.elementAt(index); } /** * Adds an item to this <code>Choice</code> menu. * @param item the item to be added * @exception NullPointerException if the item's value is <code>null</code>. * @since JDK1.1 */ public void add(String item) { addItem(item); } /** * Adds an item to this Choice. * @param item the item to be added * @exception NullPointerException If the item's value is equal to null. */ public synchronized void addItem(String item) { if (item == null) { throw new NullPointerException("cannot add null item to Choice"); } pItems.addElement(item); ChoicePeer peer = (ChoicePeer)this.peer; if (peer != null) { peer.addItem(item, pItems.size() - 1); } if (selectedIndex < 0) { select(0); } } /** * Inserts the item into this choice at the specified position. * @param item the item to be inserted * @param index the position at which the item should be inserted * @exception IllegalArgumentException if index is less than 0. */ public synchronized void insert(String item, int index) { if (index < 0) { throw new IllegalArgumentException("index less than zero."); } int nitems = getItemCount(); Vector tempItems = new Vector(); /* Remove the item at index, nitems-index times storing them in a temporary vector in the order they appear on the choice menu. */ for (int i = index ; i < nitems; i++) { tempItems.addElement(getItem(index)); remove(index); } add(item); /* Add the removed items back to the choice menu, they are already in the correct order in the temp vector. */ for (int i = 0; i < tempItems.size() ; i++) { add((String)tempItems.elementAt(i)); } } /** * Remove the first occurrence of <code>item</code> * from the <code>Choice</code> menu. * @param item the item to remove from this <code>Choice</code> menu. * @exception IllegalArgumentException if the item doesn't * exist in the choice menu. * @since JDK1.1 */ public synchronized void remove(String item) { int index = pItems.indexOf(item); if (index < 0) { throw new IllegalArgumentException("item " + item + " not found in choice"); } else { remove(index); } } /** * Removes an item from the choice menu * at the specified position. * @param position the position of the item. * @since JDK1.1 */ public synchronized void remove(int position) { pItems.removeElementAt(position); ChoicePeer peer = (ChoicePeer)this.peer; if (peer != null) { peer.remove(position); } /* Adjust selectedIndex if selected item was removed. */ if (pItems.size() == 0) { selectedIndex = -1; } else if (selectedIndex == position) { select(0); } else if (selectedIndex > position) { select(selectedIndex-1); } } /** * Removes all items from the choice menu. * @see java.awt.Choice#remove * @since JDK1.1 */ public synchronized void removeAll() { int nitems = getItemCount(); for (int i = 0 ; i < nitems ; i++) { remove(0); } } /** * Gets a representation of the current choice as a string. * @return a string representation of the currently * selected item in this choice menu. * @see java.awt.Choice#getSelectedIndex * @since JDK1.0 */ public synchronized String getSelectedItem() { return (selectedIndex >= 0) ? getItem(selectedIndex) : null; } /** * Returns an array (length 1) containing the currently selected * item. If this choice has no items, returns null. * @see ItemSelectable */ public synchronized Object[] getSelectedObjects() { if (selectedIndex >= 0) { Object[] items = new Object[1]; items[0] = getItem(selectedIndex); return items; } return null; } /** * Returns the index of the currently selected item. * @see #getSelectedItem */ public int getSelectedIndex() { return selectedIndex; } /** * Sets the selected item in this <code>Choice</code> menu to be the * item at the specified position. * @param pos the positon of the selected item. * @exception IllegalArgumentException if the specified * position is invalid. * @see java.awt.Choice#getSelectedItem * @see java.awt.Choice#getSelectedIndex * @since JDK1.0 */ public void select(int pos) { if (pos >= pItems.size()) { throw new IllegalArgumentException("illegal Choice item position: " + pos); } if (pItems.size() > 0) { selectedIndex = pos; ChoicePeer peer = (ChoicePeer)this.peer; if (peer != null) { peer.select(pos); } } } /** * Sets the selected item in this <code>Choice</code> menu * to be the item whose name is equal to the specified string. * If more than one item matches (is equal to) the specified string, * the one with the smallest index is selected. * @param str the specified string * @see java.awt.Choice#getSelectedItem * @see java.awt.Choice#getSelectedIndex * @since JDK1.0 */ public synchronized void select(String str) { int index = pItems.indexOf(str); if (index >= 0) { select(index); } } /** * Adds the specified item listener to receive item events from * this <code>Choice</code> menu. * @param l the item listener. * @see java.awt.event.ItemEvent * @see java.awt.event.ItemListener * @see java.awt.Choice#removeItemListener * @since JDK1.1 */ public synchronized void addItemListener(ItemListener l) { itemListener = AWTEventMulticaster.add(itemListener, l); newEventsOnly = true; } /** * Removes the specified item listener so that it no longer receives * item events from this <code>Choice</code> menu. * @param l the item listener. * @see java.awt.event.ItemEvent * @see java.awt.event.ItemListener * @see java.awt.Choice#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 choice. If the event is an * instance of <code>ItemEvent</code>, it 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.Choice#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 <code>Choice</code> * menu 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.Choice#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 * choice menu. This string is useful for debugging. * @return the parameter string of this <code>Choice</code> menu. * @since JDK1.0 */ protected String paramString() { return super.paramString() + ",current=" + getSelectedItem(); } /* Serialization support. */ private int choiceSerializedDataVersion = 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/Choice.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, 175231👍, 0💬
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