Java Applet Example

This rookie just contact Java a week, to its understanding is not deep, can only intuitively feel it. The personal sense and C + + are syntactically similar (actually just pair), first using two sample programs to show the face of Java programs.

Example one: Classic GCD and LCM for two integer numbers. (The Euclidean algorithm is more typical)

Package LCM and GCD;

Import Java.util.Scanner;

public class Zuixiao {public
	static void Main (string[] args) {
		int a,b,m;
		Scanner s = new Scanner (system.in);
		System.out.print ("Please enter an integer:");
		A=s.nextint ();
		System.out.print ("Enter an integer again:");
		B=s.nextint ();
		Deff cd=new Deff ();
		M=cd.deff (a,b);
		int n=a*b/m;
		System.out.println ("GCD:" +m);
		System.out.println ("LCM:" +n);
	}
Class deff{Public
	int Deff (int x,int y) {
		int t;
		if (x<y) {
			t=x;
			x=y;
			y=t;
		}
		while (y!=0) {
			if (x==y) return x;
			else {
				int k=x%y;
				x=y;
				Y=k
			}
		}
		return x;
	}
}

The results of the run are as shown in the figure:

Example two: Enter the year, month, and day to determine the day of the week. Involved in the form of a message dialog box input and output, the effect is better than C + + (of course, can be input and output in a console, but the visual effects of No message dialog box pull wind). Please look at the code.

Package Zongheti;

Import Javax.swing.JOptionPane;
		public class Zongheti {public static void main (string[] args) {int h,q,m,j,k;
		String yearstriing = Joptionpane.showinputdialog (null, "Enter year", "Enter Demo", Joptionpane.question_message);
		
		Double year = double.parsedouble (yearstriing);
		String monthstring = Joptionpane.showinputdialog (null, "Enter Month", "Enter Demo", Joptionpane.question_message);
		
		Double month = double.parsedouble (monthstring);
		String daymonthstring = Joptionpane.showinputdialog (null, "Enter the number of days in a month", "Enter Demo", Joptionpane.question_message);

		Double daymonth = double.parsedouble (daymonthstring);
		j = (int) year/100;
		k = (int) year%100;
		m = (int) month;
		Q = (int) daymonth;
		if (m = = 1 | | | m = = 2) m+=12;
		H = (q+ (int) (26* (m+1)/10) +k+ (int) (K/4) + (int) (J/4) +5*j)%7;
		String day = "";
			Switch (h) {Case 0:day = "VI";
		Break
			Case 1:day = "Day";
		Break
			Case 2:day = "one";
		Break
			Case 3:day = "two";
		Break Case4:day = "three";
		Break
			Case 5:day = "four";
		Break
			Case 6:day = "five";
		Break
		String output = (int) year+ "year" + (int) month+ "The first of the month" + (int) daymonth+ "Days are weeks" +day;
	Joptionpane.showmessagedialog (Null,output, "Judgment of the Week", Joptionpane.information_message);
 }
}

The results of the run are as shown in the figure:

I believe that no contact with the Java children's shoes to see such a running effect, will feel the light bar, hurriedly from the foundation of the beginning to learn Java bar. Let you walk with me.

In addition to a simple Java and C/s + +: If you are engaged in the web and Internet industry, the main learning Java, while engaged in desktop system or service development, Linux and SCM industry, mainly learning C/s. Both languages are very widely used, and no one is better than that.