Java

Java Applet: Draw a bar chart, Values placed in an HTML attributes and Display bar-chart

By Rabins Sharma Lamichhane

June 11, 2017

Write a JAVA program to draw a bar chart for the table given below which shows annual result analysis of a school from period 2001-2005. These values may be placed in an HTML file as <param> attributes and then used in Applet for displaying bar-chart. Write a program to draw a bar chart for the table given below which shows annual result analysis of a school from period 2001-2005.

Year Result %
2001 80
2002 90
2003 100
2004 100
2005 98
import java.applet.*; import java.awt.*; /* <applet code = "BarChart.class" width=400 height=400> <param name="year0" value="2001"> <param name="year1" value="2002"> <param name="year2" value="2003"> <param name="year3" value="2004"> <param name="year4" value="2005"> <param name="result0" value="80"> <param name="result1" value="90"> <param name="result2" value="100"> <param name="result3" value="100"> <param name="result4" value="98"> </applet> */ public class BarChart extends Applet { int n; String year[]; int value[]; public void init() { n = 5; year = new String[n]; value = new int[n]; year[0] = getParameter("year0"); year[1] = getParameter("year1"); year[2] = getParameter("year2"); year[3] = getParameter("year3"); year[4] = getParameter("year4"); value[0] = Integer.parseInt(getParameter("result0")); value[1] = Integer.parseInt(getParameter("result1")); value[2] = Integer.parseInt(getParameter("result2")); value[3] = Integer.parseInt(getParameter("result3")); value[4] = Integer.parseInt(getParameter("result4")); } public void paint(Graphics g) { Font font = new Font("Arial",Font.BOLD,15); g.setFont(font); for(int i = 0; i < n; i ++) { g.setColor(Color.BLUE); g.drawString(year[i], 20, i * 50 + 30); g.setColor(Color.RED); g.fillRect(70, i * 50 + 10, value[i], 40); g.drawString(String.valueOf(value[i]) + "%", 180, i * 50 + 35); } String msg = "Bar Chart from Year 2001 - 2005"; g.setColor(Color.darkGray); font = new Font("Arial",Font.BOLD,20); g.setFont(font); g.drawString(msg, 50, 300); } }

 

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