要过节了也要交代码了,简单的问题就是不知道怎么解决。寻求友情帮助。在线等。。。 简单的问题都解决不出来???强烈要求退出开发行会!!!大家跟我一起鄙视他啊~!~!~!~ 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 最鄙视煽风点火\只会说风凉话的人。 你说的不是太清楚,所以我有以下代码,不知道能不能帮你!SmallCellComboExample.javaimport java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.table.*;import javax.swing.event.*;import jp.gr.java_conf.tame.swing.combobox.*;public class SmallCellComboExample extends JFrame { public SmallCellComboExample() { super( "SmallCell Combo Example" ); DefaultTableModel dm = new DefaultTableModel(4,10) { public void setValueAt(Object obj, int row, int col) { if (obj != null) { String str; if (obj instanceof String) { str = ((String)obj).substring(0,2); } else { str = obj.toString(); } super.setValueAt(str, row, col); } } }; JTable table = new JTable( dm ); String[] str = { "010 - To Time", "020 - Vacation", "030 - Feel Bad" }; SteppedComboBox combo = new SteppedComboBox(str) { public void contentsChanged(ListDataEvent e) { selectedItemReminder = null; super.contentsChanged(e); } }; Dimension d = combo.getPreferredSize(); combo.setPopupWidth(d.width); DefaultCellEditor editor = new DefaultCellEditor(combo); table.setDefaultEditor(Object.class, editor); JScrollPane scroll = new JScrollPane( table ); getContentPane().add(scroll, BorderLayout.CENTER); } public static void main(String[] args) { SmallCellComboExample frame = new SmallCellComboExample(); frame.addWindowListener( new WindowAdapter() { public void windowClosing( WindowEvent e ) { System.exit(0); } }); frame.setSize( 300, 120 ); frame.setVisible(true); }}SteppedComboBox.javaimport java.awt.*;import java.util.*;import javax.swing.*;import javax.swing.plaf.metal.*;import javax.swing.plaf.basic.*;class SteppedComboBoxUI extends MetalComboBoxUI { protected ComboPopup createPopup() { BasicComboPopup popup = new BasicComboPopup( comboBox ) { public void show() { Dimension popupSize = ((SteppedComboBox)comboBox).getPopupSize(); popupSize.setSize( popupSize.width, getPopupHeightForRowCount( comboBox.getMaximumRowCount() ) ); Rectangle popupBounds = computePopupBounds( 0, comboBox.getBounds().height, popupSize.width, popupSize.height); scroller.setMaximumSize( popupBounds.getSize() ); scroller.setPreferredSize( popupBounds.getSize() ); scroller.setMinimumSize( popupBounds.getSize() ); list.invalidate(); int selectedIndex = comboBox.getSelectedIndex(); if ( selectedIndex == -1 ) { list.clearSelection(); } else { list.setSelectedIndex( selectedIndex ); } list.ensureIndexIsVisible( list.getSelectedIndex() ); setLightWeightPopupEnabled( comboBox.isLightWeightPopupEnabled() ); show( comboBox, popupBounds.x, popupBounds.y ); } }; popup.getAccessibleContext().setAccessibleParent(comboBox); return popup; }} public class SteppedComboBox extends JComboBox { protected int popupWidth; public SteppedComboBox(ComboBoxModel aModel) { super(aModel); setUI(new SteppedComboBoxUI()); popupWidth = 0; } public SteppedComboBox(final Object[] items) { super(items); setUI(new SteppedComboBoxUI()); popupWidth = 0; } public SteppedComboBox(Vector items) { super(items); setUI(new SteppedComboBoxUI()); popupWidth = 0; } public void setPopupWidth(int width) { popupWidth = width; } public Dimension getPopupSize() { Dimension size = getSize(); if (popupWidth < 1) popupWidth = size.width; return new Dimension(popupWidth, size.height); }} 生成excel之后并打开excel问题“另一个程序正在使用此文件,进程无法访问。” java继承中static问题 新手求教,如何对两个字符串进行按位与操作? 哪里有成熟的线程池框架下载 使用 SetTree 排序是遇到的小问题。。。。。。。 请问JVM是与操作系统绑定的还是与应用程序绑定的? 有关finalize 弱弱的问一下:这种效果是如何实现的? 跪求一个用j2me编写手机幻灯片(要代码) 要到硬件公司去笔试了,就说是基础知识.不知笔试一般考查啥?谢谢了(有经验的制导一下) JBuilder中的字体的颜色该怎么定制? 有关字符编码格式转换的问题?望不吝赐教。
SmallCellComboExample.javaimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import jp.gr.java_conf.tame.swing.combobox.*;public class SmallCellComboExample extends JFrame { public SmallCellComboExample() {
super( "SmallCell Combo Example" );
DefaultTableModel dm = new DefaultTableModel(4,10) {
public void setValueAt(Object obj, int row, int col) {
if (obj != null) {
String str;
if (obj instanceof String) {
str = ((String)obj).substring(0,2);
} else {
str = obj.toString();
}
super.setValueAt(str, row, col);
}
}
};
JTable table = new JTable( dm );
String[] str = {
"010 - To Time",
"020 - Vacation",
"030 - Feel Bad"
};
SteppedComboBox combo = new SteppedComboBox(str) {
public void contentsChanged(ListDataEvent e) {
selectedItemReminder = null;
super.contentsChanged(e);
}
};
Dimension d = combo.getPreferredSize();
combo.setPopupWidth(d.width);
DefaultCellEditor editor = new DefaultCellEditor(combo);
table.setDefaultEditor(Object.class, editor);
JScrollPane scroll = new JScrollPane( table );
getContentPane().add(scroll, BorderLayout.CENTER);
} public static void main(String[] args) {
SmallCellComboExample frame = new SmallCellComboExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
}
});
frame.setSize( 300, 120 );
frame.setVisible(true);
}
}SteppedComboBox.javaimport java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.plaf.metal.*;
import javax.swing.plaf.basic.*;class SteppedComboBoxUI extends MetalComboBoxUI {
protected ComboPopup createPopup() {
BasicComboPopup popup = new BasicComboPopup( comboBox ) {
public void show() {
Dimension popupSize = ((SteppedComboBox)comboBox).getPopupSize();
popupSize.setSize( popupSize.width,
getPopupHeightForRowCount( comboBox.getMaximumRowCount() ) );
Rectangle popupBounds = computePopupBounds( 0,
comboBox.getBounds().height, popupSize.width, popupSize.height);
scroller.setMaximumSize( popupBounds.getSize() );
scroller.setPreferredSize( popupBounds.getSize() );
scroller.setMinimumSize( popupBounds.getSize() );
list.invalidate();
int selectedIndex = comboBox.getSelectedIndex();
if ( selectedIndex == -1 ) {
list.clearSelection();
} else {
list.setSelectedIndex( selectedIndex );
}
list.ensureIndexIsVisible( list.getSelectedIndex() );
setLightWeightPopupEnabled( comboBox.isLightWeightPopupEnabled() ); show( comboBox, popupBounds.x, popupBounds.y );
}
};
popup.getAccessibleContext().setAccessibleParent(comboBox);
return popup;
}
}
public class SteppedComboBox extends JComboBox {
protected int popupWidth;
public SteppedComboBox(ComboBoxModel aModel) {
super(aModel);
setUI(new SteppedComboBoxUI());
popupWidth = 0;
} public SteppedComboBox(final Object[] items) {
super(items);
setUI(new SteppedComboBoxUI());
popupWidth = 0;
}
public SteppedComboBox(Vector items) {
super(items);
setUI(new SteppedComboBoxUI());
popupWidth = 0;
}
public void setPopupWidth(int width) {
popupWidth = width;
}
public Dimension getPopupSize() {
Dimension size = getSize();
if (popupWidth < 1) popupWidth = size.width;
return new Dimension(popupWidth, size.height);
}
}