Description: Write Java code to achieve a counter class Counter, which includes: the domain counterValue used to save the current value of the counter method increment () counter is incremented by 1 method decrement () the counter is decremented by one method reset () clear thinking: This category should be defining several constructor? Why? The counter class, write a test class to manage the conference room projector lending situation. Each new purchase of a projector or withdraw a projector, the counter is incremented out of a projector, or lend a projector, the counter is decremented by 1.
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Coun.java
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