Answer Posted / neojava

System is a built-in class present in java.lang package.
This class has a final modifier, which means that, it cannot
be inherited by other classes.
It contains pre-defined methods and fields, which provides
facilities like standard input, output, etc.

out is a static final field (ie, variable)in System class
which is of the type PrintStream (a built-in class, contains
methods to print the different data values).
static fields and methods must be accessed by using the
class name, so ( System.out ).

out here denotes the reference variable of the type
PrintStream class.

println() is a public method in PrintStream class to print
the data values.
Hence to access a method in PrintStream class, we use
out.println() (as non static methods and fields can only be
accessed by using the refrence varialble)

Explain abstract class in java?

1066

---

What is the difference between compile-time polymorphism and runtime polymorphism?

997

---

What is a default constructor and also define copy contrucyor?

1106

---

What is a package in java? List down various advantages of packages.

1279

---

How to use string tokenizer class.

1207

---

Is java a compiler?

978

---

What is a nested structure?

1040

---

What is the purpose of default constructor?

1000

---

What is a singleton class? Give a practical example of its usage.

1101

---

How many characters is 2 bytes?

994

---

Can we catch more than one exception in single catch block?

1051

---

What is null statement?

1013

---

Outline the major features of java.

1078

---

What is the purpose of checked and unchecked exceptions in JAVA?

1011

---

Can you explain the meaning of aggregation and composition

1010

---