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Java Interview Question And Answer How System Out Println Works in Java

2,913 views · Published 23 November 2013 · 2:21 · Indexed 10 November 2026

Channel: Interview DOT · 2013 · Science & Technology

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Inside the System class is the declaration of 'out' that looks like: 'public static final PrintStream out', and inside the Prinstream class is a declaration of 'println()' that has a method signature that looks like: 'public void println()'. 
"System" -- is a final class and cannot be inherited 
"Out" -- is a static member field of System class and is of type PrintStream. Its access specifiers are public final. This gets instantiated during startup and gets mapped with standard output console of the host. 
"Println" -- println prints the argument passed to the standard console and a newline. 

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