Answer Posted / aman kr. aggarwal

well as in c++ we have multiple inheritance, but not in java

becz if it is their then having method of same signature
(means same return type, list of paraments, access
specifiers) in 2 different classes and both r extended by
some class AA then while calling method in base class, it
would break down the jvm that to which classes method to be
called.
EX:-
class BB
{
public void a(int x)
{
System.out.println("call from BB");
}
}
class CC
{
public void a(int x)
{
System.out.println("call fro CC");
}
}
class AA extends BB,CC
{
a(5);
}

I want to print “hello” even before main is executed. How will you acheive that?

1047

---

What is a method signature java?

989

---

Explain what access modifiers can be used for methods?

1030

---

How do you start a thread?

978

---

Define how does a try statement determine which catch clause should be used to handle an exception?

1066

---

What is meant by method overriding?

1034

---

How to retrieve data from database in java using arraylist?

992

---

What is sortedmap in java?

976

---

Which class is the superclass for every class in java programming?

938

---

Can we assign null to double in java?

961

---

How do you write a scanner class in java?

953

---

Can the garbage collection be forced by any means?

932

---

What is scope of a variable?

1037

---

What is complexity in java?

963

---

Why strings in java are called as immutable?

946

---