What is the difference between String str1 = "hello"; and String str2 = new String ("hello"); in java?

Monday 22 January 2018

What is the difference between String str1 = "hello"; and String str2 = new String ("hello");
in java?

I know the
str2 is a object, but what about
str1?

I mean
for example:

if both of them are object, but why

if(str1.toString() ==
            str2.toString())

does
not result a true boolean?

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