What is explicit casting?

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How do I know if I have jre or jdk?

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If one class havent the constructor, it has normal method, then can i use super keyword to call the method form the sub class and vice verse?

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What is the use of lambda functions?

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What about 'hostile applets'? : java security

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What is the difference between Object Code and ByteCode? Why do people keep saying that bytecode is like the intermediate of source and object code? Also, which is better/commonly used and why? Please keep in mind that I am a beginner, please keep all terminology fairly simple. Thanks!

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How do I export a java project?

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What is java lang noclassdeffounderror?

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What is the java api?

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What is repository pattern in java?

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What is static class in java?

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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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