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Java
Classes
What are the primitive data types?
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What types exist in Java?
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What is static?
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What are the different access modifiers?
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Describe the process of creating an instance of a class
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Does new Integer(128) == 128?
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What can you do with a variable holding null?
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What is an enum?
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What is the purpose of class loaders?
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What are the default class loaders?
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Overload vs override
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How to write a singleton?
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What is the difference between interface and @interface?
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When does Class.getClassLoader return null?
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How can you determine if A is a subtype of B?
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What is the difference between interface and abstract class?
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What if both implemented interfaces declare the same method?
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How to write an immutable class?
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How to use SPI?
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How to launch another program from a Java application?
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