(1)让组件在屏幕中央显示
public static void setContainerCenter(Container container) {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int screenWidth = screenSize.width;
int screenHight = screenSize.height;
container.setLocation((screenWidth - container.getWidth()) / 2, (screenHight - container.getHeight()) / 2);
}
(2)隐藏Jtable中的某一列
public static void hideColByLocation(int col, JTable table){
DefaultTableColumnModel dcm = (DefaultTableColumnModel) table.getColumnModel();
dcm.getColumn(col).setPreferredWidth(0);
dcm.getColumn(col).setMaxWidth(0);
dcm.getColumn(col).setMinWidth(0);
}
(3)Jtable中定位到当前新增加的行
public static void focusCurrentRow(JTable table, List objs) {
int last = objs.size() - 1;
table.setRowSelectionInterval(last, last);
table.changeSelection(last, 0, false, false);
}
(4)Jtable中行的上移、下移操作
public static void eventOnMoveUpOrDowmBySelectedRow(JTable table, String str, List nameList) {
int[] selectedRows = table.getSelectedRows();
for (int i = 0; i < selectedRows.length - 1; i++) {
if(selectedRows[i + 1] - selectedRows[i] != 1){
return;
}
}
List swapSelectedList = null;
if ("上移".equals(str)) {
if(selectedRows.length == 1){
swapSelectedList = swap(nameList, selectedRows[0], selectedRows[0] - 1);
setNameListAndModel(swapSelectedList, table);
table.getSelectionModel().setSelectionInterval(selectedRows[0] - 1, selectedRows[0] - 1);
}else{
swapSelectedList = swapUp(nameList, selectedRows);
setNameListAndModel(swapSelectedList, table);
table.getSelectionModel().setSelectionInterval(selectedRows[0]-1, selectedRows[selectedRows.length-1]-1);
}
} else if ("下移".equals(str)) {
if(selectedRows.length == 1){
swapSelectedList = swap(nameList, selectedRows[0], selectedRows[0] + 1);
setNameListAndModel(swapSelectedList, table);
table.getSelectionModel().setSelectionInterval(selectedRows[0] + 1, selectedRows[0] + 1);
}else{
swapSelectedList = swapDown(nameList, selectedRows);
setNameListAndModel(swapSelectedList, table);
table.getSelectionModel().setSelectionInterval(selectedRows[0]+1, selectedRows[selectedRows.length-1]+1);
}
}
}
/**
* {方法功能中文描述}上移多行
*/
private static List swapUp(List list, int[] selectedRows) {
if (selectedRows.length >= list.size() || selectedRows.length == 0 || selectedRows[0] == 0) {
return list;
} else {
String obj = list.get(selectedRows[0] - 1);
for (int pos : selectedRows) {
list.set(pos - 1, list.get(pos));
}
list.set(selectedRows[0] + selectedRows.length - 1 , obj);
return list;
}
}
/**
* {方法功能中文描述}下移多行
*/
private static List swapDown(List list, int[] selectedRows) {
if (selectedRows.length >= list.size() || selectedRows.length == 0 || selectedRows[selectedRows.length-1] == list.size()-1) {
return list;
} else {
String obj = list.get(selectedRows[selectedRows.length-1] + 1);
for (int i = selectedRows.length-1; i >= 0; i--) {
list.set(selectedRows[i] + 1, list.get(selectedRows[i]));
}
list.set(selectedRows[0] , obj);
return list;
}
}
/**
* {方法功能中文描述} 交换两行的位置
*/
private static List swap(List list, int fromRow, int toRow) {
if (toRow >= list.size() || toRow < 0) {
return list;
} else {
String obj = list.get(fromRow);
list.set(fromRow, list.get(toRow));
list.set(toRow, obj);
return list;
}
}
private static void setNameListAndModel(List NameList, JTable table) {
/**重新设置model中数据**/
table.getModel().setNames(NameList);
/**数据变化**/
table.getModel().fireTableDataChanged();
table.setModel(uiModel);
}
(5)打开面板选中Jtree第一个节点并展开
public static void setFirstNode2Selected(DefaultTreeModel model,JPanel panel, JTree currTree){
/**通过树根获取其第一个孩子**/
TreeNode firstChild = (TbTreeNode) ((DefaultMutableTreeNode)panel.getLeftContentPanel().getTreeModel().getRoot()).getFirstChild();
Object userObject = firstChild.getUserObject();
/**通过VO获取Node对象**/
TreeNode childnode = panel.getTreeModel().getNodeByVo(userObject);
if(childnode!=null){
childnode.setCanBeSelected(true); /**设置可被选中**/
childnode.setSelectState(TreeNode.SELECTED); /**设置被选中**/
}
/**设置选中的路径状态**/
currTree.getSelectionModel().setSelectionPath(new TreePath(childnode.getPath()));
}
(6)JTable行的多种选择模式
setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); //一次选择一个或多个连续的索引范围。
setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION); //一次选择一个连续的索引范围。
setSelectionMode(ListSelectionModel.SINGLE_SELECTION); //一次选择一个列表索引。
(7)JTable不可编辑
调用AbstractTableModel中的setWriteable()方法，true为可以编辑，false为不可编辑
(8)JTable中数据发生变化时
调用AbstractTableModel中 fireTableDataChanged()方法进行处理
(9)JTable显示设置
//设置列名称
private static final String[] colNames = new String[] { "A", "B", "C", "D"};
//设置列名称显示
public String getColumnName(int column) {
return colNames[column];
}
//设置列数目
public int getColumnCount() {
return colNames.length;
}
//是否可编辑
public boolean isCellEditable(int rowIndex, int columnIndex) {
if(!isWriteable){
return false;
}
if(isWriteable){
//设置第二列可以编辑
if(columnIndex == 1){
return true;
}
}
return false;
}
//填充数据模型
public Object getValueAt(int rowIndex, int columnIndex) {
//假设从某一list中获取数据对象，遍历该list
if (list != null && list.size() > 0) {
for (int i = 0;i< list.size(); i++) {
switch (columnIndex) {
case 0:
return ""; //返回值自行设定
case 1:
return "";
case 2:
return "";
case 3:
return "";
case 4:
return "";
}
}
}
return null;
}
//修改表中数据时
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
if(columnIndex == 1){
//操作...
}
}
