How do I install java re?

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what type of java questions asked?

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public class Dog { private int weight; public int getweight(){ return weight; } public void SetWeight(int newWeight){ if (newWeight > 0){ weight = newWeight; } } } public class TestDog { public static void main(String[] args) { Dog d = new Dog(); System.out.println("Dog d's weight is " + d.getWeight()); d.setWeight(42); System.out.println("Dog d's weight is " + d.getWeight()); d.setweight(-42); System.out.println("Dog d's weight is " + d.getWeight()); } } class dog is compiled but there is an error in class TestDog when compiled and the error is with dot notations. I want to kmow why there is error in testdog class when compiled.

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What is jpa implementation?

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What is javax annotation generated?

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Are the actual permissions for the application defined at run-time or compile-time? : java security

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Why do we only use the main method to start a program?

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Who developed rxjava?

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I get an exception if I remove the static modifier from main?

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Is java singleton thread safe?

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What do you understand by downcasting?

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What is http session in java?

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