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Class SystemPropertiesTableModel


public class SystemPropertiesTableModel
extends SortableTableModel

A sortable table model containing the system properties.
Author:
David Gilbert

Nested Class Summary

protected static class
SystemPropertiesTableModel.SystemProperty
Useful class for holding the name and value of a system property.
protected static class
SystemPropertiesTableModel.SystemPropertyComparator
A class for comparing SystemProperty objects.

Constructor Summary

SystemPropertiesTableModel()
Creates a new table model using the properties of the current Java Virtual Machine.

Method Summary

int
getColumnCount()
Returns the number of columns in the table model.
String
getColumnName(int column)
Returns the name of the specified column.
int
getRowCount()
Returns the number of rows in the table model (that is, the number of system properties).
Object
getValueAt(int row, int column)
Returns the value at the specified row and column.
boolean
isSortable(int column)
Returns true for the first column, and false otherwise - sorting is only allowed on the first column.
void
sortByColumn(int column, boolean ascending)
Sorts on the specified column.

Methods inherited from class org.jfree.ui.SortableTableModel

getSortingColumn, isAscending, isSortable, setAscending, sortByColumn

Constructor Details

SystemPropertiesTableModel

public SystemPropertiesTableModel()
Creates a new table model using the properties of the current Java Virtual Machine.

Method Details

getColumnCount

public int getColumnCount()
Returns the number of columns in the table model. In this case, there are two columns: one for the property name, and one for the property value.
Returns:
the column count (always 2 in this case).

getColumnName

public String getColumnName(int column)
Returns the name of the specified column.
Parameters:
column - the column index.
Returns:
the column name.

getRowCount

public int getRowCount()
Returns the number of rows in the table model (that is, the number of system properties).
Returns:
the row count.

getValueAt

public Object getValueAt(int row,
                         int column)
Returns the value at the specified row and column. This method supports the TableModel interface.
Parameters:
row - the row index.
column - the column index.
Returns:
the value.

isSortable

public boolean isSortable(int column)
Returns true for the first column, and false otherwise - sorting is only allowed on the first column.
Overrides:
isSortable in interface SortableTableModel
Parameters:
column - the column index.
Returns:
true for column 0, and false for all other columns.

sortByColumn

public void sortByColumn(int column,
                         boolean ascending)
Sorts on the specified column.
Overrides:
sortByColumn in interface SortableTableModel
Parameters:
column - the column index.
ascending - a flag that controls the sort order.