Is eclipse a jdk?
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What is a dao layer in java?
What is optional in java 8? What is the use of optional?advantages of java 8 optional?
Explain the encapsulation principle.
Is jdk a compiler?
What is the most important feature of java?
What kind of thread is the garbage collector thread?
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.
Can the main method be overloaded?
Do I need both jdk and jre?
Is lambda functional programming?
What is Serialization?
What is the difference between a jdk and a jvm?