Program : Domain name service (DNS) By : Kapil Lohia import java.net.*; class dns { public static void main(String args[]) throws Exception { try { InetAddress[] address=InetAddress.getAllByName("java.sun.com"); for(int j=0;j<address.length;j++) System.out.println(address[j]); } catch(Exception e) { System.out.println("Error in accessing Internet :"+e); } } }
Program : To display the IP Address of a particular Host By : Kapil Lohia import java.net.*; import java.io.*; public class ip_host { public static void main(String args[]) throws Exception { System.out.println("Enter the host name :"); String n=new DataInputStream(System.in).readLine(); InetAddress ipadd =InetAddress.getByName(n); System.out.println("IP address :"+ipadd); } }
Program : To display Local machines IP Address By : Kapil Lohia import java.net.*; import java.io.*; public class ip_localmachine { public static void main(String args[]) throws Exception { InetAddress ipadd =InetAddress.getLocalHost(); System.out.println("Host and Address :"+ipadd); System.out.println("Host name :"+ipadd.getHostName()); String n=ipadd.toString(); System.out.println("IP address :"+n.substring(n.indexOf("/")+1)); } }
Program : Client-Server Program using TCP/IP By : Kapil Lohia Program 1: import java.net.*; import java.io.*; class tcpip_server { public static void main(String args[]) throws IOException { ServerSocket n1=null; try { n1=new ServerSocket(98); } catch(IOException e) { System.err.println("Port 98 could not be found"); System.exit(1); } Socket c=null; try { c=n1.accept(); System.out.println("Connection from "+c); [...]
Program : DatagramSocket and DatagramPacket (Client-Server Program using UDP/IP) By : Kapil Lohia Program 1 : import java.net.*; class udpip_server { public static DatagramSocket ds; public static byte buffer[]=new byte[1024]; public static void Myserver() throws Exception { int pos=0; while(true) { int c=System.in.read(); switch(c) { case -1: System.out.println("Server quits"); return; case ‘\r’:break; [...]
Program : Uniform Resource Locator (URL) By : Kapil Lohia import java.net.*; import java.io.*; class url { public static void main(String args[]) throws Exception { URL n1 = new URL("http://java.sun.com:80/docs/index#down"); System.out.println("Protocol:"+n1.getProtocol()); System.out.println("Host :"+n1.getHost()); System.out.println("File Name :"+n1.getFile()); System.out.println("Port :"+n1.getPort()); System.out.println("Reference :"+n1.getRef()); } }
To implement tower of Hanoi problem. #include<stdio.h> void hanoi_tower(char,char,char,int); void hanoi_tower(char peg1,char peg2,char pege3,int n) { if(n<=0) printf("\n Illegal Entry"); if(n==1) printf ("\n Move disk from %c to %c", pege1,pege3); else { hanoi_tower(peg1,peg3,peg2,n-1); hanoi_tower(peg1,peg2,peg3,1); hanoi_tower(peg2,peg1,peg3,n-1); } } Void main () { int n; printf("\n Input the number of dise:); scanf("%d", &n); printf("\n Tower of Hanoi [...]
To implement a shape selector from a given set of shapes import java.awt.*; import java.awt.event.*; import java.applet.*; public class shape extend Applet implements itemListener { Chekbox reet,circle,line; ChekboxGroup cbg; String msg; String s1="reet"; String s2="circle"; string s3="line"; publice void init() { cbg=new checkboxGroup(); rect = new checkbox("reet,cbg,tru); circle = new Checkbox("circle",cbg.false); line [...]
To implement a Color Section from a given set of Color. import java.awt*; import java.awt.event.*; import java.applet.*; public class fillcolor extends Applet implement Item Listener { checkbox red,yellow,black,blue.orange; CheckboxGroup cbg; String msg; String s1="red"; String s2="yellow"; String s3="black"; String s4="orange"; public void init() { cbg = new CheckboxGroup(); red = new Chechbox("red",cbg,true); yellow= new [...]
C program for sorting a Linked List. #include<stdio.h> #include<dirent.h> #include<malloc.h> #include<string.h> void main (int argc,char * argv[]) { DIR * directory_pointer; struct dirent* entry; struct File list { char filename[64]; struct File * new; } start,*node,* previous, * new; if((directory_pointer=opendir(argv[1]))==NULL) printf("Error opening %s\n", argv[1]); else { start.next + NULL; while (entry = readdir (directory_pointer)) [...]
