Java 渲染时的JTable撕裂
我已经建立了一个Java 渲染时的JTable撕裂,java,swing,jtable,Java,Swing,Jtable,我已经建立了一个JTable，并使其包含18列。最初，当它是13列时，它与JTable非常吻合，没有撕裂。然而，一旦我使其包含18个表，并将autoresize设置为off，当我使用水平滚动条尝试滚动其他列时，JTable开始撕裂，如下图所示： Netbeans还开始向我发送大量错误消息，如： Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 14 at javax.swi
JTableJTableJTable答案是这样的： 线程“AWT-EventQueue-0”java.lang.ArrayIndexOutOfBoundsException中的异常：14处 这意味着它知道它应该有更多的列，并且它想绘制下一列，但无法绘制，因为基础表模型没有那么多列
为表指定18列意味着您还需要更新关联的表模型。两者都需要同步才能使表工作。我认为您声明的列比数据数组中的列多 此代码示例准确地再现了您的问题：
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
public class TestTable {
public JFrame f;
private JTable table;
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestTable().initUI();
}
});
}
protected void initUI() {
String[][] data = new String[1][1];
data[0] = new String[] { "hello" };
String[] columns = new String[] { "Column-1", "Column-2" };
table = new JTable(data, columns);
f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(300, 300);
f.setLocationRelativeTo(null);
f.add(new JScrollPane(table));
f.setVisible(true);
}
}
String[][] data = new String[1][18];
data[0] = new String[15]; // <-- This will cause some problems
String[][]数据=新字符串[1][18]；
数据[0]=新字符串[15]；//您的代码中显然有错误。您看到的堆栈跟踪可能是问题的原因。发布一些代码来重现这个问题。嗯，但是我使用的表模型是默认的表模型。。。我没有为它设置任何桌子模型。如何更新表格模型？谢谢你的帮助！这解决了我的问题！我真傻。。。我声明列号比实际列号短。
String[][] data = new String[1][18];
data[0] = new String[15]; // <-- This will cause some problems
import java.util.List;
import java.util.Random;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
public class TestTable {
public JFrame f;
private JTable table;
public class ModelObject {
private String column0; // Consider using something more explicit than column0,1,...
private String column1;
public String getColumn0() {
return column0;
}
public void setColumn0(String column0) {
this.column0 = column0;
}
public String getColumn1() {
return column1;
}
public void setColumn1(String column1) {
this.column1 = column1;
}
}
private class TableModel extends AbstractTableModel {
private List<ModelObject> data;
protected TableModel(List<ModelObject> data) {
super();
this.data = data;
}
@Override
public int getRowCount() {
return data.size();
}
@Override
public String getColumnName(int column) {
switch (column) {
case 0:
return "Header 0";
case 1:
return "Header 1";
}
System.err.println("Only two columns are known in this table model");
return "???";
}
@Override
public int getColumnCount() {
return 2;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
ModelObject o = data.get(rowIndex);
switch (columnIndex) {
case 0:
return o.getColumn0();
case 1:
return o.getColumn1();
}
System.err.println("Only two columns are known in this table model");
return null;
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestTable().initUI();
}
});
}
protected void initUI() {
Random r = new Random();
Vector<ModelObject> data = new Vector<TestTable.ModelObject>();
for (int i = 0; i < 10; i++) {
ModelObject o = new ModelObject();
o.setColumn0("Some stuff in column 0 " + i);
o.setColumn1("Some other stuff in column 1 " + r.nextInt());
data.add(o);
}
table = new JTable(new TableModel(data));
f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(300, 300);
f.setLocationRelativeTo(null);
f.add(new JScrollPane(table));
f.setVisible(true);
}
}