Answer Posted / ravikiran

JDK is the java development kit contains the executable
files
JRE is the java run time envirnment contains all the
runtime jar files
JVM is the java virtual machine which is used to convert
the byte code to user understandable code

Can we instantiate interface in java?

1190

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Give differences between Quicksort & Mergesort. When should these sorts be used and what is their running time?

1135

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How to convert string to byte array and vice versa?

1144

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Can we override compareto method?

989

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Can java arraylist hold different types?

1151

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Can we call the constructor of a class more than once for an object?

1140

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Can an object subclass another object?

1174

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Should you use singleton pattern?

993

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What is meant by data hiding/encapsulation?

1157

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What is variable in java?

1046

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How many tetrahedral voids are there in bcc?

1170

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how would you implement a thread pool? : Java thread

969

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What are basic data types?

1169

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Explain abstract class in java?

1127

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Do you know why doesn't the java library use a randomized version of quicksort?

992

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