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What is the importance of is-a and has-a relationship


Problem

1. Why do we need to put "<" and ">" in public ArrayList is it necessary to run the code? (line 598)

2. What's the importance of "()" in getProgrammingLanguages() (line 598)

3. Is the ("") in System.out.println(""); important? (line 615)

4. What is the importance of IS-A and HAS-A relationship?

5. Why arent we using any space in "howtoeat" in public String howToEat() (line 983)

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JAVA Programming: What is the importance of is-a and has-a relationship
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