a))) ***How Method return a value? Write necessary Syntax.
A method returns to the code that invoked it when it:
1.completes all the statements in the method, 2.reaches a return statement, or 3.throws an exception (covered later) whichever occurs first.
Need to declare a method's return type in its method declaration. Within the body of the method use the return statement
to return the value. Any method declared void doesn't return a value. It does not need to contain a return statement, but it may do so. In such
a case, a return statement can be used to branch out of a control flow block and exit the method and is simply used like
this:
return;
If try to return a value from a method that is declared void, ir will be a compiler error. Any method that is not declared void must contain a return statement with a corresponding return value, like this:
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*********Write any JAVA program that takes parameters in a Method.
ReplyDeleteSource code:
package Box;
public class Box
{
public double width;
public double depth;
public double height;
public Box(double width,double depth,double height)
{
this.width=width;
this.depth=depth;
this.height=height;
}
public double calculate()
{
double volume = width*depth*height;
return volume;
}
public static void main(String[] args)
{
Box box = new Box(5,4,3);
double volumeOfBox = box.calculate();
System.out.println("The volume is " + volumeOfBox);
}
}
a))) ***How Method return a value? Write necessary Syntax.
ReplyDeleteA method returns to the code that invoked it when it:
1.completes all the statements in the method,
2.reaches a return statement, or
3.throws an exception (covered later) whichever occurs first.
Need to declare a method's return type in its method declaration. Within the body of the method use the return statement
to return the value.
Any method declared void doesn't return a value. It does not need to contain a return statement, but it may do so. In such
a case, a return statement can be used to branch out of a control flow block and exit the method and is simply used like
this:
return;
If try to return a value from a method that is declared void, ir will be a compiler error.
Any method that is not declared void must contain a return statement with a corresponding return value, like this:
return returnValue;
b) Write any JAVA program that takes parameters in a Method.
ReplyDeletepublic class Box
{
public double calvol(double width,double heigth ,double depth)
{
return width*heigth*depth;
}
}
public class Ob {
public static void main(String[] args) {
Box b1 = new Box();
double vol;
vol = b1.calvol(11,12,14);
System.out.println("The volum is : " + vol);
}
}
*******a) How Method return a value? Write necessary Syntax.**********
ReplyDeleteSolution:
Returning value from the method: We can specify return type of the method as "primitive data type" or
"class name". Return type can be be "void" means it does not return any value. Method can return a
value by using "return" keyword.
e.g. int len = R1.getLength( );
Example of returning value from the method:
Source code:
package square;
public class Square
{
double length;
double width;
void setLength(int len)
{
length = len;
}
double getLength()
{
return length;
}
}
class SquareDemo
{
public static void main(String args[])
{
Square s1 = new Square();
s1.setLength(20.5);
double len = s1.getLength();
System.out.println("Length of a Square : " + len);
}
}
here is a typing mistake *void setLength(int len).....it will be *void setLength(double len)
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ReplyDeleteProjects like Apache Mesas provide a powerful and growing range of distributed cluster management capabilities. Most Spark implementations still use Apache Hadoop and its associated projects to meet these requirements.
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