Презентация на тему Classes and objects

area=length*width;
System.out.println(“Area is” +area);
 
}
}

public class TestBox{
public static void main (String[]

Box{
int length;
int width;
 
Int calculateArea(){
 
int area=length*width;
return area;
 
}
}

public class TestBox{
public static

x){
 
int area=length*width*x;
return area;
 
}
}

public class TestBox{
public static void main (String[]

length,int width){
 
int area=length*width;
return area;
 
}
}

public class TestBox{
public static void main

int length,int width){
 
int area=this.length*this.width;
return area;
 
}
}

public class TestBox{
public static void

{
this.length = length;
this.width=width;
}

void calculateArea( ){
 
System.out.println(“Area is” +(length+width));
 
}
}

public class TestSmallBox{
public

use a constructor(initial defalt values) Concructors have the same name

public class SmallBox{
int length;
int width;
 
SmallBox( ){
 
this.length=5;
this.width=6;
}
 
void calculateArea(){
System.out.println(“Area”+(length+width));
}
}

public class TestBox{
public static void main (String[] args){
SmallBox obj1 =new Employee();
obj1.calculateArea();
}
}

Output ?

Constructors

use a constructor(initial defalt values) Concructors have the same name

public class SmallBox{
int length;
int width;
 
SmallBox(int length,int width ){
 
this.length=length;
this.width=width;
}
 
void calculateArea(){
System.out.println(“Area”+(length+width));
}
}

public class TestBox{
public static void main (String[] args){
Box obj1 =new Employee();
obj1.calculateArea();
}
}

Output ?

Constructors with parameters