如何在JTable中控制焦点

JTable table = new JTable();
table.requestFocusInWindow();
int row = 0;
int column = 0;
table.setRowSelectionInterval(row, row);
table.setColumnSelectionInterval(column, column);
table.editCellAt(row, column);

JTable table = new JTable();
int row = 0;
int column = 0;
table.changeSelection(row, column, false, false);

JTable table = new JTable();
int row = 0;
int column = 0;
table.setRowSelectionInterval(row, row);
table.setColumnSelectionInterval(column, column);

JTable table = new JTable();
int row = 0;
int column = 0;
table.editCellAt(row, column);