What is an interface in java? Explain
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What is data type modifier?
How many objects are created when we create String class object using new operator?
What is mutable object and immutable object?
What is a classloader in java?
What is the differnence between String Buffer and String builder despite having knowledge that String builder is faster than String Buffer and last one is threadsafe.please tell another important difference.
What is externalizable?
What is functional interface in java example?
Explain with example the concept of constant variable in java.
Can static method access instance variables ?
What are void methods?
public class Test { public static void main(String ar[]) { Integer a = 10; Integer b =10; Integer c = 145; Integer d = 145; System.out.println(a==b); System.out.println(c==d); } }
What is character in data type?