CODEWITHSUNDEEP
javatimer
Bert Jan
Bert Jan

Reputation: 11

Java wait for next print

I want the second print to happen after 2 seconds.

System.out.println("First print.");
//I want the code that makes the next System.out.println in 2 seconds.
System.out.println("This one comes after 2 seconds from the println.");

Upvotes: 0

Views: 5122

Answers (5)

Tim Biegeleisen
Tim Biegeleisen

Reputation: 521093

You should use Thread#sleep:

Causes the currently executing thread to sleep

Note that you should use try-catch block around the call to Thread.sleep() because another Thread could interrupt main() while it's sleeping. In this case, it's not necessary to catch it because there is only one Thread active, main().

try {
    Thread.sleep(2000)
catch (InterruptedException e) {
    System.out.println("main() Thread was interrupted while sleeping.");
}

Upvotes: 2

BackSlash
BackSlash

Reputation: 22233

Just use Thread#sleep:

System.out.println("First print.");
Thread.sleep(2000);//2000ms = 2s
System.out.println("This one comes after 2 seconds from the println.");

Note that Thread.sleep can throw an InterruptedException, so you will need a throws clause or a try-catch, like:

System.out.println("First print.");
try{
    Thread.sleep(2000);//2000ms = 2s
}catch(InterruptedException ex){
}
System.out.println("This one comes after 2 seconds from the println.");

or:

public void something() throws InterruptedException {
    System.out.println("First print.");
    Thread.sleep(2000);//2000ms = 2s
    System.out.println("This one comes after 2 seconds from the println.");
}

Upvotes: 5

Max
Max

Reputation: 801

If you want your java code to sleep for 2 sec you can use the sleep function in Thread:

Thread.sleep(millisec);

The millisec argument is how many milliseconds you want to sleep f.ex:

1 sec = 1000 ms
2 sec = 2000 ms
and so on..

So your code will be something like this:

System.out.println("First print.");
try {
    Thread.sleep(2000); //2 secs
catch (InterruptedException e) {
    e.printStackTrace();
}
System.out.println("This one comes after 2 seconds from the println.");

(the try-catch is needed because sometimes it will throw a excpetion if the SecurityManager dont allow the thread to sleep but dont worry, thats will never happen..)
-Max

Upvotes: 1

darijan
darijan

Reputation: 9775

Thread.currentThread().sleep(2000); //2000 milliseconds = 2 seconds

Upvotes: 1

Tala
Tala

Reputation: 8928

try {
    Thread.sleep(2000); //2 secs
catch (InterruptedException e) {
}

Upvotes: 3

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