blocks|key|4263714|text|这很简单，使用构造函数new+JTable(Vector+rowData,+Vector+columnNames)创建一个JTable，其中rowData是新表的数据，columnNames是每列的名称。如果您只想创建一个包含标题而不包含行的表，请将Vector+rows设置为空。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4263715|Vector+rows+=+new+Vector();
Vector+headers+=+new+Vector();
headers.addElement("Id");
headers.addElement("First+name");
headers.addElement("Last+name");

JTable+table+=+new+JTable(rows,+headers);|code-block|syntax|javascript|4263716|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/8/docs/api/javax/swing/JTable.html#JTable-java.util.Vector-java.util.Vector-|1|https://docs.oracle.com/javase/8/docs/api/javax/swing/JTable.html^0|B|1A|1P|6|1Y|7|2C|B|3H|B|B|1A|0|1P|6|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]]|E|$]]|$1|F|3|G|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

It's simple, create a <a href="https://docs.oracle.com/javase/8/docs/api/javax/swing/JTable.html" rel="nofollow noreferrer"><code>JTable</code></a> using constructor <a href="https://docs.oracle.com/javase/8/docs/api/javax/swing/JTable.html#JTable-java.util.Vector-java.util.Vector-" rel="nofollow noreferrer"><code>new JTable(Vector rowData, Vector columnNames)</code></a>, where <code>rowData</code> is the data for the new table and <code>columnNames</code> is names of each column. In case you want to create just a table with a header and no rows, make the <code>Vector rows</code> empty.

<pre><code>Vector rows = new Vector();
Vector headers = new Vector();
headers.addElement("Id");
headers.addElement("First name");
headers.addElement("Last name");

JTable table = new JTable(rows, headers);
</code></pre>

blocks|key|4263748|text|有许多方法可以创建和定义JTable。要执行您想要的操作，请使用TableModel方法。您可以定义一个空模型，然后用数据填充它。有关示例，请参阅Creating+a+JTable。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4263749|下面是一个空表模型的简单演示。|4263750|import+java.awt.BorderLayout;
import+javax.swing.JFrame;
import+javax.swing.JScrollPane;
import+javax.swing.JTable;
import+javax.swing.table.DefaultTableColumnModel;
import+javax.swing.table.DefaultTableModel;
import+javax.swing.table.TableColumn;
import+javax.swing.table.TableColumnModel;
import+javax.swing.table.TableModel;

public+class+JTableDemo+{

++++public+static+void+main(String+args[])+{

++++++++JFrame+frame+=+new+JFrame();
++++++++frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

++++++++TableModel+model+=+new+DefaultTableModel();

++++++++Object+headers[]+=+{+"Column+One",+"Column+Two",+"Column+Three"};

++++++++TableColumnModel+columnModel+=+new+DefaultTableColumnModel();
++++++++TableColumn+firstColumn+=+new+TableColumn(1);
++++++++firstColumn.setHeaderValue(headers[0]);
++++++++columnModel.addColumn(firstColumn);

++++++++TableColumn+secondColumn+=+new+TableColumn(0);
++++++++secondColumn.setHeaderValue(headers[1]);
++++++++columnModel.addColumn(secondColumn);

++++++++TableColumn+thirdColumn+=+new+TableColumn(0);
++++++++thirdColumn.setHeaderValue(headers[2]);
++++++++columnModel.addColumn(thirdColumn);

++++++++JTable+table+=+new+JTable(model,+columnModel);

++++++++JScrollPane+scrollPane+=+new+JScrollPane(table);
++++++++frame.add(scrollPane,+BorderLayout.CENTER);
++++++++frame.setSize(300,+150);
++++++++frame.setVisible(true);

++++}
}|code-block|syntax|javascript|4263751|entityMap|0|LINK|mutability|MUTABLE|url|http://www.java2s.com/Tutorial/Java/0240__Swing/CreatingaJTable.htm^0|21|H|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

There are many ways to create and define a JTable. To do what you want, use the TableModel approach. You can define an empty model and fill it with data later. See <a href="http://www.java2s.com/Tutorial/Java/0240__Swing/CreatingaJTable.htm" rel="nofollow noreferrer">Creating a JTable</a> for some examples.

Here is a simple demo of an empty table model.

<pre><code>import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;

public class JTableDemo {

 public static void main(String args[]) {

 JFrame frame = new JFrame();
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 TableModel model = new DefaultTableModel();

 Object headers[] = { "Column One", "Column Two", "Column Three"};

 TableColumnModel columnModel = new DefaultTableColumnModel();
 TableColumn firstColumn = new TableColumn(1);
 firstColumn.setHeaderValue(headers[0]);
 columnModel.addColumn(firstColumn);

 TableColumn secondColumn = new TableColumn(0);
 secondColumn.setHeaderValue(headers[1]);
 columnModel.addColumn(secondColumn);

 TableColumn thirdColumn = new TableColumn(0);
 thirdColumn.setHeaderValue(headers[2]);
 columnModel.addColumn(thirdColumn);

 JTable table = new JTable(model, columnModel);

 JScrollPane scrollPane = new JScrollPane(table);
 frame.add(scrollPane, BorderLayout.CENTER);
 frame.setSize(300, 150);
 frame.setVisible(true);

 }
}
</code></pre>

I am trying to create a JTable without any data rows, only column Headers added. How to do that? The idea is to add or remove rows later with button click event.

How to Create a JTable with column headers only, no rows added

我正在尝试创建一个没有任何数据行的JTable，只添加了列标题。如何做到这一点？其思想是稍后使用按钮单击事件添加或删除行。

问如何创建只包含列标题而不添加行的JTable
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