import java.io.*;
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| <servlet> <servlet-name>CounterServlet</servlet-name> <servlet-class>CounterServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>CounterServlet</servlet-name> <url-pattern>/CounterServlet</url-pattern> </servlet-mapping> |
public void setDeamon(boolean b)
The following is a simple program which creates a thread within the
context of the main thread of execution. Since the main thread is a user
thread the created thread will also be a user thread unless it's status
is set otherwise. A couple of notes about the following code. If the
created threads status is not set or false is passed to the setDameon()
method then the created thread will fully execute. This is because the
main thread cannot return until all non-daemon threads are finished.
Setting the status to true in our case doesn't give our daemon
thread much time to do it's bussiness since the main method will quickly
execute then return thus stopping our daemon thread dead in it's
tracks. We would be lucky to get a print out of one year!. So what can
we do? Either we can put the main thread to sleep for an amount of time
(enough to give our dameon thread time to do it's business) or simply
make it a non-daemon thread by setting it's status to false.
public class UserThread{
public static void main(String[] args){
Thread t = new Thread(new DaemonThread(525.00f, 0.09f));
t.setDaemon(true);
t.start();
try{
Thread.sleep(250); // must give the deamon thread a chance to run!
}catch(InterruptedException ei){ // 250 mills might not be enough!
System.err.println(ei);
}
}
}
class DaemonThread implements Runnable{
private float principal;
private float futureval;
private float rate;
private float i;
public DaemonThread(float principal, float rate){
this.principal= principal;
this.rate = rate;
}
public void run(){
for(int year = 0; year <= 75; year++){
i = (1 + rate);
futureval = principal * (float)Math.pow(i,year);
System.out.print(principal + " compounded after " + year + " years @ " + rate + "% = " + futureval);
System.out.println();
}
}
}
import java.io.*;
public class OccurancesInArray{
public static void main(String[] args) throws IOException{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.print("How many elements you want to enter in the array: ");
int num=0;
try{
num = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne){
System.out.println(ne.getMessage() + " is not a number!");
System.exit(0);
}
String[] elements = new String[num];
int a;
int k;
for(int i = 0; i < num; i++){
elements[i] = in.readLine();
}
for(int i = 0; i < elements.length; i++){
a = 0;
k = 1;
for(int j = 0; j < elements.length; j++){
if(j >= i){
if(elements[i].equals(elements[j]) && j != i){
k++;
}
}
else if(elements[i].equals(elements[j])){
a = 1;
}
}
if(a != 1){
System.out.println("Occurance of \'" + elements[i] + "\' : " + k);
}
}
}
}