Java (Q & A)

[istoryansucks]

public class KilometersConversion {

public static void main ( string []args)

{

// convert distance in miles to kilometers.
double miles ;
float kms=1.609;

// Get the distance in miles.
//1 mile = 1.609 344 kilometer;


System.out.println("Enter the distance in mile:");
System.out.print(miles);

float kms= kms * miles;

System.out.println("That equals to kilometers.");
System.out.print(kms);
}
}

}

mo error cya unsa kulang ani mga bro ug sis?
class, interface, or enum expected
}
^
1 error

Tool completed with exit code 1

[josephG]

public class KilometersConversion {

    public static void main ( string []args)<--- string!=String

    {

        // convert distance in miles to kilometers.
        double miles ;
        float kms=1.609;

        // Get  the distance in miles.
        //1 mile = 1.609 344 kilometer;


        System.out.println("Enter the distance in mile:");
        System.out.print(miles);<--- System.out is not use for reading input: Please check Console  class in JDK6 API

        float kms= kms * miles;<--- this exprsion rsult is double datatype either change kms to double or typecast this expression

        System.out.println("That equals to kilometers.");
        System.out.print(kms);
    }
}

}<--- Sobra

[josephG]

Rewritten your code..

import java.io.Console;

public class KilometersConversion {

	public static void main ( String []args)
	{
	   Console console = System.console(); //Use for reading input but only available on JDK6, if Using JDK5 or below please google Scanner class
 	   // convert distance in miles to kilometers.
 	   double miles ;
 	   double kms=1.609;

	   // Get the distance in miles.
	   //1 mile = 1.609 344 kilometer;

	   String input = console.readLine("Enter the distance in mile:");
	   miles = new Double(input); //may cause NumberFormat exception, Please read more on exception handling

	   kms = kms * miles;
	   System.out.println("That equals to kilometers. "+ kms);
	}
}

[istoryansucks]

Actually,bro nag practice go sa libro gikan c to java.dli pa kaayo ko used ani codes sa java.

[istoryansucks]

Quote: Originally Posted by josephG Rewritten your code.. import java.io.Console; public class KilometersConversion { public static void main ( String []args) { Console console = System.console(); //Use for reading input but only available on JDK6, if Using JDK5 or below please google Scanner class // convert distance in miles to kilometers. double miles ; double kms=1.609; // Get the distance in miles. //1 mile = 1.609 344 kilometer; String input = console.readLine("Enter the distance in mile:"); miles = new Double(input); //may cause NumberFormat exception, Please read more on exception handling kms = kms * miles; System.out.println("That equals to kilometers. "+ kms); } }

thanks bro!!!imu g correctionan gamay

[josephG]

Quote: Originally Posted by istoryansucks Actually,bro nag practice go sa libro gikan c to java.dli pa kaayo ko used ani codes sa java.

onsa nga book bro? lahi rman gud ang non OOP e convert nmo to OOP murag lisod hehe, mas maayo book for core java or java for beginners.

[istoryansucks]

problem solving and project design in C.ako ni g practice bro para kahibalo ko mo convert sa C to java nga language ..para mo sharpen atong huna2x ba..hehehhe!!!!core java unsa mani e-books?

[istoryansucks]

public class KilometersConversion {

public static void main ( string []args)
{
double a,b,c,d,e;
double average;

average = a+b+c+d+e /5
System.out.println("sum of the total average = " + average);
}
}

unsa sayop ani or kuwang?

[doomsweek]

• Should be:
  

  public static void main(String[] args)

• a,b,c,d and e are uninitialized.
  

  average = a+b+c+d+e /5;

  I think this is equivalent to (e/5) + a + b + c + d.
  
  Should be(?):
  

  average = (a + b + c + d + e) / 5;

• ...and I think it should say "Average" and not "sum of the total average".

[istoryansucks]

C:\Documents and Settings\User\My Documents\exx.java:14: possible loss of precision
found : double
required: int
sum = (a + b + c + d + e /5);
^
1 error


public class exx
{
public static void main(String[]args)
{
double Average;
int sum;
double a=1.0,b=3.0,c=6.0,d=9.0,e=4.5;


System.out.println("Sum of total average"+ sum) ;

sum = (a + b + c + d + e /5);

}

}

[doomsweek]

See solution here.

[istoryansucks]

write a program that prompts the user to input a decimal number and output the number rounded to the nearest integer.

[istoryansucks]

write a program that prompts the user to input the length and width of a rectangle and then prints the rectangle's area and perimeter.

[aozora]

We are forming a rectangle...

Enter your desired Length : 1
Enter your desired Width: 1

Area is equal to: err... it's not a rectangle
Perimeter is equal to: err... it's not a rectangle

[istoryansucks]

positive,negative,zero using if else