JTable的基本用法

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JTable是重中之重

1、通过数组构造一个简单的表格

public class table {public static void main(String[] args) {JFrame f = new JFrame();f.setSize(400, 300);f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JPanel panel = new JPanel();JScrollPane scrollPane = new JScrollPane();scrollPane.setPreferredSize(new Dimension(300,200));Object[][] cells = {{"1","sdjf","23"},{"2","jdf","22"}};Object[] columns = {"编号","姓名","年龄"};JTable table = new JTable(cells,columns);scrollPane.setViewportView(table);panel.add(scrollPane);f.getContentPane().add(panel);f.setVisible(true);}}

2、通过模型构造表格，这是最重要的构造方法。

public class table {public static void main(String[] args) {JFrame f = new JFrame();f.setSize(400, 300);f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JPanel panel = new JPanel();JScrollPane scrollPane = new JScrollPane();scrollPane.setPreferredSize(new Dimension(300,200));JTable table = new JTable(new MyTableModel());table.setFillsViewportHeight(true);scrollPane.setViewportView(table);panel.add(scrollPane);f.getContentPane().add(panel);f.setVisible(true);}}//构造自己的表格模型class MyTableModel extends AbstractTableModel{@Overridepublic int getColumnCount() {return 3;}@Overridepublic int getRowCount() {return 20;}@Overridepublic Object getValueAt(int rowIndex, int columnIndex) {return rowIndex+","+columnIndex;}}