What are the differences between java == and equals

To summarize:

(1) For ==, the comparison is whether the values ​​are equal;

If If it acts on a variable of a basic data type, it will directly compare whether its stored "value" is equal;

If it acts on a variable of a reference type, it will compare the address of the pointed object.

(2) For the equals method, note: the equals method cannot act on variables of basic data types. equals inherits the Object class and compares whether they are the same object;

If If the equals method is not overridden, the address of the object pointed to by the reference type variable is compared;

If classes such as String and Date override the equals method, the comparison is The contents of the pointed object.

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