Why does this happen? This is because out and err are two different output streams. However, both of them print on console. So you do not see them as different streams. Moreover, when you do out.println(), it is not guaranteed that you will see the output on the console as soon as the statement gets … Read more
System is a final class from the java.lang package. out is a class variable of type PrintStream declared in the System class. println is a method of the PrintStream class.
Note You may not be able to color Window’s cmd prompt, but it should work in many unix (or unix-like) terminals. Also, note that some terminals simply won’t support some (if any) ANSI escape sequences and, especially, 24-bit colors. Usage Please refer to the section Curses at the bottom for the best solution. For a … Read more
System.out is just an instance of PrintStream. You can check its JavaDoc. Its variability is based on method overloading (multiple methods with the same name, but with different parameters). This print stream is sending its output to so called standard output. In your question you mention a technique called variadic functions (or varargs). Unfortunately that … Read more
No. Actually out is a static member in the System class (not as in .NET), being an instance of PrintStream. And println is a normal (overloaded) method of the PrintStream class. See http://download.oracle.com/javase/6/docs/api/java/lang/System.html#out. Actually, if out/err/in were classes, they would be named with capital character (Out/Err/In) due to the naming convention (ignoring grammar).
System.out.print(“\”Hello\””); The double quote character has to be escaped with a backslash in a Java string literal. Other characters that need special treatment include: Carriage return and newline: “\r” and “\n” Backslash: “\\” Single quote: “\'” Horizontal tab and form feed: “\t” and “\f” The complete list of Java string and character literal escapes may … Read more
Your last sentence is effectively correct, but the distinction between these two operations is HUGE, so I’d like to provide a more in depth explanation of their differences. The Difference: return is an instruction that controls the flow of your program’s execution. It is a fundamental part of the Java syntax. It tells the computer … Read more
Pure speculation is that you’re using a terminal that attempts to do word-wrapping rather than character-wrapping, and treats B as a word character but # as a non-word character. So when it reaches the end of a line and searches for a place to break the line, it sees a # almost immediately and happily … Read more