Axis axis1 = plot.getDomainAxis();
axis1.setLabelFont(new Font("sansserf",Font.PLAIN,30));
axis1.setLabelPaint(Color.white);
Axis axis = plot.getDomainAxis();
axis.setTickLabelFont(new Font("Serif", Font.PLAIN,25));
axis.setTickLabelPaint(Color.white);
Axis axis2 = plot.getRangeAxis();
axis2.setLabelFont(new Font("Serif", Font.PLAIN, 30));
axis2.setLabelPaint(Color.white);
Axis axis3 = plot.getRangeAxis();
axis3.setTickLabelFont(new Font("Serif", Font.PLAIN, 25));
axis3.setTickLabelPaint(Color.white);