Answer Posted / vineet ahlawat

System is a class of java.lang package.
Out is a reference object in print stream class of java .io
package.
ptintln is a method in printstream class.

How many ways can we create singleton class?

963

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What is the purpose of a transient variable?

1062

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What are the principle concepts of oops?

955

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What is the use of predicate in java 8?

958

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Is arraylist dynamic in java?

985

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What is meant by inheritance and what are its advantages?

1101

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Can a class be a super class and a sub-class at the same time? Give example.

1548

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Explain the transient field modifier?

1043

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What is tostring () method?

1024

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What is the relationship difference the canvas class and the graphics class?

1060

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What is boolean false?

981

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What do you mean by append?

1063

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What does the ‘static’ keyword mean? Is it possible to override private or static method in java?

984

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What is an immutable class?

1137

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What is the difference between length and length () in java?

940

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