I have two string value

String string1="msg1";
String string2="msg2";

In my jsp i would like to display the string1 value for only 30 seconds(without refreshing the page), after 30 seconds completed i need to display only string2 value continuously.

How to achieve this ?

I would like to execute this code in my jsp. how to do ?

public class ProgressBar extends Thread {

private String progressMessage = null;
private String statusMessage = null;

public ProgressBar(String progressMessage, String statusMessage) {
super(progressMessage);
this.progressMessage = progressMessage;
this.statusMessage = statusMessage;
}

@Override
public void run() {

try {
System.out.println(progressMessage);
Thread.sleep(30000);
System.out.println(statusMessage);


} catch (Exception e) {
}

}

public static void main(String[] args) {
ProgressBar s1 = new ProgressBar("In Progress", "Successfully executed...");
s1.start();
}
}