[英]change column names after refreshing JTable java
I dont know why column names are named "A","B","C" ... after refreshing JTable. 我不知道为什么在刷新JTable之后将列名命名为“ A”,“ B”,“ C”...。
I created a class to refresh JTable. 我创建了一个刷新JTable的类。
public class TableModelClass extends AbstractTableModel
{
Object[][] data;
Object[] title;
public TableModelClass(Object[][] dat, Object[] tit)
{
data = dat;
title = tit;
}
@Override
public int getColumnCount()
{
if(title != null)
return title.length;
return 0;
}
@Override
public int getRowCount()
{
if(data != null)
return data.length;
return 0;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex)
{
return data[rowIndex][columnIndex];
}
} }
I set JTables values default in my class: 我在类中将JTables值设置为默认值:
Object[] titlesDefault = { "tit1", "tit12","tit3"};
Object[][] dataDefault = {{ "1", "2","3"},
{"1", "2","3"}};
_jTable = new JTable(dataDefault, titlesDefault);
_bAddTable.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent arg0)
{
try
{
Object[] titles2 = { "1", "2","3", "1", "2","3"};
Object[][] data = {{ "1", "2","3"},
{ "1", "2","3"},
{"1", "2","3"}};
data.setModel(new TableModelClass(data, titles2));
}
catch (ClassNotFoundException)
{
e1.printStackTrace();
}
};
});
And after this I receive letters in column names. 然后,我收到列名称中的字母。 Why?
为什么?
Without overriding getColumnName
, the TableModel
uses default values of "A", "B", "C", etc. 在不覆盖
getColumnName
的情况下, TableModel
使用默认值“ A”,“ B”,“ C”等。
@Override
public String getColumnName(int column) {
return title[column];
}
For this to work you need to return a String
so that it corresponds to the return type in the super class. 为此,您需要返回一个
String
,以使其与超类中的返回类型相对应。 The title
variable should be defined as a String[]
type. title
变量应定义为String[]
类型。
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