What does '=' in java mean?

1. For variables

The equal sign has the function of assignment. For example, a=3 means assigning 3 to a. This is very simple. Everyone often assigns values. In addition to judging the double equal sign, the single equal sign is assigned when initializing the object.

2. For reference objects

The equal sign has the function of passing a reference (implicit pointer). This is not difficult to understand. For example, pointer: a=b, pointer of object a Points to the address of object b. At this time, a refers to the address of b, which plays the role of passing the address.

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