Speak questions: | and | | The difference between & and &&. 2. What kinds of data types are in Java? What are the basic data types?

| and | | The difference between & and &&.

| or for or operations to be judged as logical OR

|| For short-circuit or only logical judgment when the left side is true no longer continues to judge

& and Computation as logic and

&& for short circuit with when left for false no longer continues to judge

What kinds of data types are in Java?

Divided into basic data types and reference data types

There are 8 basic data types

Reference data types are types such as arrays of string collections, and so on, or user-defined. such as person phone, etc.

Speak questions: | and | | The difference between & and &&. 2. What kinds of data types are in Java? What are the basic data types?