63_Slider

//JSlider = GUI component that let's user enter a value by using an adjustable sliding knob on a track

<Main.java>
public class Main{
    public static void main(String[] args){

    sliderDemo sliderDemo = new sliderDemo();

    }
}

<sliderDemo.java>
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;

public class sliderDemo implements ChangeListener{
    JFrame frame;
    JPanel panel;
    JLabel label;
    JSlider slider;

    sliderDemo(){

        //Instantiate
        frame = new JFrame("Slider Demo");
        panel = new JPanel();
        label = new JLabel();
        slider = new JSlider(0,100,50);//min,max,starting point

        slider.setPreferredSize(new Dimension(400,400));

        slider.setPaintTicks(true);
        slider.setMinorTickSpacing(10); //ranges below

        slider.setPaintTrack(true);
        slider.setMajorTickSpacing(25);//ranges below

        slider.setPaintLabels(true); //number value shown as range tick
        slider.setFont(new Font("MV Boli",Font.PLAIN,15));

        slider.setOrientation((SwingConstants.VERTICAL)); //to make slider vertical/horizontal

        label.setText("°C = "+slider.getValue());

        slider.addChangeListener(this);

        panel.add(slider);
        panel.add(label);
        frame.add(panel);
        frame.setSize(420,420);
        frame.setVisible(true);

    }


    @Override
    public void stateChanged(ChangeEvent e) {
        label.setText("°C = "+slider.getValue()); //the text change as selected slider changed
    }
}