[JAVA] char type in java array of values but an array of content with the results of the array name is not printed address

Problem Description

• Reference variable is stored in the address value of the object instance, if a variable direct printing, the output value should be the address.

• The numeric array int array: direct printing the array name after initialization, the address value is outputted.

• But: char type arrays, whether new or direct assignment initialization, not actually address values ​​are displayed directly after printing, but the contents of the array.

Cause Analysis

• an array of char is equivalent to a string.

• Since the output stream is System.out PrintStream objects, there PrintStream method println plurality overloaded, one of which is public void println (char [] x), then directly printed character array, not int [] array other, it will directly call this method to print, so you can print out the contents of the array instead of the address.

tips:

• String, it is not change its content.

• An array of characters, you can change the contents of the array contains.

• If the depth to say, the bottom of the string is an array implementation.

• Difference used to say, convenient strings, arrays flexible.

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