If I am creating a string and not initializing the value I am using the same string object Or is it reassigning the string reference to the new string, which might want to change the value.
class Foo () {String x; String y = null; X = "Hello"; Y = "hey"; } My understanding is now that X would not be making an additional string object. But y would be creating another string, but it will be referenced in the context of the newly created string "O" with tap string. Is it true?
string foo itself is just a reference Since it is a string-reference, it is capable of referring to a string called 'string pool', whose implementation it however creates a new string even though not .
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string bar = null; The string bar, such as Foo, is a string reference , but no new object is formed by creating a reference foo and The difference between bar is assigned to that time for zero , but the tap is definitely not a string and therefore there is no reason to create JVM A new string -
Your last impression really comes closer to what happens.
string foo = "hello world"; Creates a new string (assuming "Hello World" is not found in the string pool yet)
You can divide this statement into three small details: < / P>
string foo creates a new reference, capable of referencing string objects "Hello World" , assign new spaces to the "new string" (string bridge in this case) And actually creates a new object. = string x; string y = null; will create a new string but both of them The statements will be
x = "hello"; y = "hey"; 
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