define System.out.println(); what is the meaning!
Answer Posted / sagar g
System : The System is a class and cannot be instantiated.
out : Its a static field with type PrintStream of System
class and object of PrintStream class.
println : Its a method of PrintStream class.
As "println()" is a method of PrintStream class and "out"
is an object of PrintStream class, object can call its
public method "println()"
out.println();
Since "out" is static , it so that it is called using class
name "System"
System.out.println()
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What do you mean by exception handling in Java?
Why is the main method declared static?
What is the maximum size of list in java?
Can memory leak happen java?
What is difference between identifier and variable?
What do you mean by static variable?
What is a condition in programming?
What are scalar data types?
What is identifier with example?
Can java list be null?
What is string in java with example?
What are the new features in java 8? Explain
3.2 Consider the following class: public class Point { protected int x, y; public Point(int xx, int yy) { x = xx; y = yy; } public Point() { this(0, 0); } public int getx() { return x; } public int gety() { return y; } public String toString() { return "("+x+", "+y+")"; } } Say you wanted to define a rectangle class that stored its top left corner and its height and width as fields. 3.2.1 Why would it be wrong to make Rectangle inherit from Point (where in fact it would inherit the x and y coordinates for its top left corner and you could just add the height and width as additional fields)? (1) 8 Now consider the following skeleton of the Rectangle class: public class Rectangle { private Point topLeft; private int height, width; public Rectangle(Point tl, int h, int w) { topLeft = tl; height = h; width = w; } public Rectangle() { this(new Point(), 0, 0); } // methods come here } 3.2.2 Explain the no-argument constructor of the Rectangle class given above. 3.2.3 Write methods for the Rectangle class to do the following: • a toString() method that returns a string of the format "top left = (x, y); height = h; width = w " where x, y, h and w are the appropriate integer values. • an above() method that tests whether one rectangle is completely above another (i.e. all y values of the one rectangle are greater than all y values of the other). For example, with the following declarations Rectangle r1 = new Rectangle(); Rectangle r2 = new Rectangle(new Point(2,2), 1, 4); the expression r2.above(r1) should give true, and r2.above (r2) should give false. (You can assume that the height of a rectangle is never negative.) (2) (5)
What is thread life cycle in java?
what do you mean by classloader in java?