jgraphbutton.java

Java Design Pattern:Strategy 希望对大家有所帮助！

import java.awt.*;
import java.awt.event.*;
import java.util.*;

//swing classes
import javax.swing.text.*;
import javax.swing.*;
import javax.swing.event.*;


public class JGraphButton extends JButton implements Command {
    Context context;
    public JGraphButton(ActionListener act, Context ctx) {
        super("Line graph");
        addActionListener(act);
        context  = ctx;
    }
    //-------------------------------
    public void Execute() {
        context.setPenColor(Color.red); //set color of plot
        context.setLinePlot();        //set kind of plot
        context.readData("data.txt"); //read the data
        context.plot();               //plot the data
    }
}