In Java, documentation comments are set inside the comment delimiters /** ... */ with one comment per class, interface, or member. The comment should appear right before the declaration of the class, interface or member and each line of the comment should begin with a "\*".
```
/**
* The Foo class is a silly example to illustrate documentation comments.
*/
public class Foo {
/**
* An integer to keep track of for fun.
*/
private int count;
...
/**
* Increment a value by delta and return the new value.
*
* @param delta the amount the value should be incremented by
* @return the post-incremented value
*/
int increment(int delta) {
...
}
}
```