public class Test{ public static void main(String[] args){ String s1 = "runoob"; String s2 = "runoob"; System.out.println("s1 == s2 is:" + s1 == s2);}}

The code you provided has a small mistake in the print statement. The expression `"s1 == s2 is:" + s1` is concatenated with `== s2` before being passed to `System.out.println()`. This causes a compilation error because you cannot concatenate a string with a boolean value directly.

To fix this, you need to use parentheses to group the concatenation expression properly. Here's the corrected code:

public class Test {
    public static void main(String[] args) {
        String s1 = "runoob";
        String s2 = "runoob";
        System.out.println("s1 == s2 is: " + (s1 == s2));
    }
}

In this corrected code, the expression `(s1 == s2)` is properly grouped and then concatenated with the string `"s1 == s2 is: "`.