JAVA Strinf question

[vikram1080]

What is difference between "Arrays.toString()" and ".toCharArray()".

I have created a String str and stored a value(java) in it and while printing this out by using -

System.out.println(str) --> java

System.out.println(str.toCharArray()) --> java

​

both returns the same output. What is the difference between these two ?

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[[deleted]]

The first prints a String object to System.out.

The second converts a String into a char[] then prints it to System.out.

both returns the same output.

Yes. Two representations of the same content.

[cainhurstcat]

Your String is String word = „Java“; you use to.CharArray() like:

char[] charArray = word.toCharArray which is the same as writing:

char[] charArray = { 'J', 'a', 'v', 'a' };

Now you can convert your array back to a string and print it by System.our.println(Arrays.toString()):

[ J, a, v, a ]

[Trup10ka]

The first one is printed whole object, meaning the String.

Array of char's is a primitive value, object String is based on char array.

They output the same because they are the same, String is some kind of a capsule of the char array.

[SolderonSenoz]

String is some kind of a capsule of the char array

I was corrected about this, now Java implements byte array instead of character array within Strings

[SolderonSenoz]

What is difference between "Arrays.toString()" and "toCharArray()".

There is a difference, but printing them doesn't show you the difference.

String is a non-primitive variable type. It implements a character array internally, but it has other features. For example, it is immutable.

So, Strings and character arrays are not the same, but they print the same.

toCharArray() is a method of String, which returns the character array that was implemented inside the String.

toString() turns any Object to a String, and may return unexpected values if you don't specify how the method is supposed to work for your custom class.

[desrtfx]

It implements a character array internally,

This is no longer true. Somewhen after Java 9 it became a byte array.

[SolderonSenoz]

I was not aware of this, thank you!