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Core Java - Interview Questions and Answers for 'System class' - 3 question(s) found - Order By Newest

 Q1. Explain System.out.println ?Core Java2016-11-25 09:37:08

Ans. System is a class within java.lang package that contains several useful class fields and methods. It cannot be instantiated and hence can use only statically.even in this case this has been used statically i.e with class name itself and without creating an instance.

out is the static reference of Printstream declared as following in the System Class -

public final static PrintStream out = null;

println is the method of PrintStream class.

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   Like         Discuss         Correct / Improve     System class  Streams  Input Output  println     Asked in 1 Companies      basic        frequent


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 Q2. What is the difference between System.console.write and System.out.println ?
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Ans. System.console() returns null if your application is not run in a terminal (though you can handle this in your application)System.console() provides methods for reading password without echoing charactersSystem.out and System.err use the default platform encoding, while the Console class output methods use the console encoding

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   Like         Discuss         Correct / Improve     java   system class   system.out.println   system.console.write   input output   java6      intermediate        rare


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 Q3. Difference between System.out.printf and System.out.println ?Core Java2016-11-25 09:38:09

Ans. println prints an additional end of line whereas printf doesnt.

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   Like         Discuss         Correct / Improve     System class  Streams  Input Output  println  printf


Related Questions

  What is the difference between time slicing and preemptive scheduling ?
  What is a Deadlock ?
  What are various types of Class loaders used by JVM ?
  Difference between Process and Thread ?
 Explain System.out.println ?
  What are the difference between Threads and Processes ?
  Why threads block or enters to waiting state on I/O?
  What is the difference between yield() and sleep()?
  What is the initial state of a thread when it is created and started?
  What is suspend() method used for ?



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