What is System, out, println in System.out.println() in Java [duplicate]
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.
system.out
What’s the meaning of System.out.println in Java?
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).
difference between System.out.println() and System.err.println()
In Java System.out.println() will print to the standard out of the system you are using. On the other hand, System.err.println() will print to the standard error. If you are using a simple Java console application, both outputs will be the same (the command line or console) but you can reconfigure the streams so that for … Read more
How can I make Java print quotes, like “Hello”?
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
How to color System.out.println output? [duplicate]
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
Why is printing “B” dramatically slower than printing “#”?
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