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javaTable

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24 Aug 2008 (Updated )

Simple function to display cell array data in a nice looking Java JTable

javaTable(data,columnNames,tableName)
function javaTable(data,columnNames,tableName)
%Display the the 2d cell array, data, in a java JTable.
%
% Written by Matthew Dunham
    
    if(nargin < 2)
        columnNames = cell(1,size(data,2));
        columnNames(:) = {''};
    end
    if(nargin < 3)
        tableName = '';
    end
    import javax.swing.* java.awt.*;
    
    jdata = cell2java2D(data);
    jcolumnNames = cell2java1D(columnNames);
    table = JTable(jdata,jcolumnNames);
    scrollPane = JScrollPane(table);
    
    frame = JFrame(tableName);
    frame.getContentPane().add(scrollPane);
    
    table.setFont(Font('Times New Roman', Font.PLAIN, 15));
    table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF );
    p = get(0,'ScreenSize');
    width = 0.95*p(3); height = 0.6*p(4);
    table.setPreferredScrollableViewportSize(Dimension(width,height));
    for i=0:numel(columnNames)-1
       table.getColumnModel().getColumn(i).setPreferredWidth(floor(width)/numel(columnNames)); 
    end
    
    
    frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);

    function jobj = cell2java1D(data)
    %Convert a 1d cell array into a java String array, i.e. String[]
        jobj = javaArray('java.lang.String',numel(data));
        for i=1:numel(data)
           jobj(i) = java.lang.String(data{i}); 
        end
    
    end


    function jobj = cell2java2D(data)
    %Convert a 2d cell array into a 2d java String array, i.e. String[][]       
        [nrows,ncols] = size(data);
        jobj = javaArray('java.lang.String',nrows,ncols);
        for r=1:nrows
           for c=1:ncols
              jobj(r,c) = java.lang.String(data{r,c}); 
           end
        end
    end

end

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