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Hibernate Java technologies Quiz

Hibernate Java technologies Quiz

Hibernate ORM is an object-relational mapping tool for the Java programming language. It provides a framework for mapping an object-oriented domain model to a relational database.

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Quiz Questions And Answers

Which range of values ??is nextInt()generated by?

All positive integers.
All integers, both negative, zero and positive.
Integer from 1 to 100.

When new Random()a new object is created, what is the basis for the generation of the random numbers.

A random seed is selected by the system.
A default start value.
The current time in milliseconds.

Which range of values ??is the output of nextDouble()?

Double precision floating point values ??from 0.0 to almost 1.0.
All double precision floating point values, negative and positive.
All positive double precision floating point values.

Which of the following statements select floating point values ??in the range of -10.0 to 15.5 without?

25.5*rand.nextDouble() – 10.0
15.5*rand.nextDouble() – 10.0

A teacher wants a random choice of A, B, C, D and D for a multiple choice test. Which of the following instructions can be used for this?

Random rand = new Random (); , , , char answer = “ABCDE” .charAt (rand.nextInt (5));
Random rand = new Random (); , , , char answer = “ABCDE” .charAt (rand.nextInt ());
Random rand = new Random (); , , , char answer = “ABCDE” .rand.nextInt (4);

Which attributes have real existing objects?

Objects have an identity, a state and a behavior.
Objects have a state and a behavior.
Objects have a size and weight.

Which properties do all software objects have?

Software objects have RAM, ROM and processors.
Software objects have variables and memory.
Software objects have an identity, a state, and a behavior.

What is the defining characteristic of a von Neumann computer ?

Multi-purpose memory is used to store programs and data.
RAM is used for data and ROM for programs.
He has both a processor and a memory.

If you start a Java application by java IrgendeineKlassetyping, which is the first method that will be executed?

The method of main()the class IrgendeineKlasse.
The method of run()the class IrgendeineKlasse.
The method IrgendeineKlasse.

What is a class?

A class is a piece of computer memory that contains objects.
A class is a part of the hard disk reserved for object-oriented programs.
A class is a description of a type of object.

What is another name for object creation?


What are static variables and methods of a class?

Variables and methods that are part of the class definition but not their objects.
Variables and methods that form the basis of each object of the class.
Variables and methods that belong to all objects in the computer system.

What we use for length variable?

length = str.length ();
length = length.str ();
length = length (). str;

How many objects can an application create from a particular class?

Only one per constructor.
As many as the application requires.
One object per variable.

Which of the following instructions is correct?

String alpha (“Hello Quiz!”);
String = “Hello Quiz!”;
String alpha = “Hello Quiz!”;

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