please clarify

public class Test {

public static void main(String[] args) {

int passed = 0;

int failed = 0;

for (String className : args) {

try {

Class c = Class.forName(className);

c.getMethod("test").invoke(c.newInstance());

passed++;

} catch (Exception ex) {

System.out.printf("%s failed: %s%n", className, ex);

failed++;

}

}

System.out.printf("passed=%d; failed=%d%n", passed, failed);

}

}

In the above code, what does this %d, %s, and %n means. And what else are there in java and where I can get the more details. I got this example in one of the java sites. It is working fine.

Thanks in advance.

[717 byte] By [srisria] at [2007-10-3 4:50:10]