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Core Java Interview Questions and Answers

Ques 231. What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?

Ans. The Reader/Writer class hierarchy is character-oriented, and the InputStream/OutputStream class hierarchy is byte-oriented.

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Ques 232. What classes of exceptions may be caught by a catch clause?
Ans. A catch clause can catch any exception that may be assigned to the Throwable type. This includes the Error and Exception types.
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Ques 233. If a class is declared without any access modifiers, where may the class be accessed?
Ans. A class that is declared without any access modifiers is said to have package access. This means that the class can only be accessed by other classes and interfaces that are defined within the same package.
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Ques 234. Does a class inherit the constructors of its superclass?
Ans. A class does not inherit constructors from any of its superclasses.
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Ques 235. What is the purpose of the System class?
Ans. The purpose of the System class is to provide access to system resources.

public static void main(String args[])
{
System.out.println("WithoutBook");
}
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