출처 : http://stackoverflow.com/questions/3442090/java-what-is-this-ljava-lang-object

 

 

// xxxxx varies
System.out.println(new int[0][0][7]); // [[[I@xxxxx
System.out.println(new String[4][2]); // [[Ljava.lang.String;@xxxxx
System.out.println(new boolean[256]); // [Z@xxxxx

 

대충 이런 느낌

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