Code:
public class Welcome4
{
	public static void main( String args[] )
	{
		System.out.printf( "%s\n%s\n", "Welcome to", "Java programming!" );
	}
}

---------------------------------------

Error in GCJ:
Welcome4.java: In class 'Welcome4':
Welcome4.java: In method 'Welcome4.main(java.lang.String[])':
Welcome4.java:5: error: Can't find method ‘printf(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)’ in type ‘java.io.PrintStream’.
                System.out.printf( "%s\n%s\n", "Welcome to", "Java programming!" );
                             ^
1 error

----------------------------------------

Error in Java SDK:
1. ERROR in Welcome4.java (at line 5)
        System.out.printf( "%s\n%s\n", "Welcome to", "Java programming!!!" );
                   ^^^^^^
The method printf(String, String, String) is undefined for the type PrintStream