Java Help

ted9308

A simple enough question.Write a program that inputs three numbers and determines and prints a number that can be divided by 3 or 5.If a number can be divided by both 3 and 5 then this will also be displayed.Unsure of how to get my original input back out? ie the empty parentheses of System.out.print("");....I have tried x and input.nextInt() ;


import java.util.Scanner ;
public class CanANumberBeDividedBy3or5
{
public static void main(String [] args)
{
Scanner input=new Scanner(System.in) ;

int x,y,z ;

System.out.print("Enter first integer");
x=input.nextInt() ;

System.out.print("Enter second integer");
y=input.nextInt() ;

System.out.print("Enter third integer");
z =input.nextInt() ;

if (x%3 ==0)
System.out.print("");
}
}

aperture_nuig

Isn't it just:

System.out.print(x)


?

make sure you haven't written "x" in the brackets, or it'll just print the character x to the output.

areyawell

import java.util.Scanner ;
public class CanANumberBeDividedBy3or5
{
public static void main(String [] args)
{
Scanner input=new Scanner(System.in) ;

int x,y,z ;

System.out.print("Enter first integer");
x=input.nextInt() ;

System.out.print("Enter second integer");
y=input.nextInt() ;

System.out.print("Enter third integer");
z =input.nextInt() ;


if (x%3==0 && x%5==0){
System.out.println(x);

}
if (y%3 ==0 && y%5==0){
System.out.println(y);
}
if (z%3 ==0 && z%5==0){
System.out.println(z);
}
}}
Thinks that what your trying to do

ted9308

yep that works.Can you why it's (x) not "x" ?Do all print statements need to be in quotes?

JustAddWater

ted9308 wrote: »

yep that works.Can you why it's (x) not "x" ?Do all print statements need to be in quotes?

Anything in " " is a string and that's what will be displayed

x assuming it is a variable will contain a value assigned to it, so printing x will print its value

Printing "x" will print exactly that... An x

What's in quotes is what is printed

You could say
System.out.print("the value of x is " + x);

Output:
the value of x is 5

GreeBo

quotes means don't interpret this it's text.
without the quotes the jvm will print out the value if it's a primitive or call the objects tostring method if it's an object.

areyawell

ted9308 wrote: »

yep that works.Can you why it's (x) not "x" ?Do all print statements need to be in quotes?

No you don't need quotes in the system.out statements.
Only need them if you want to right a string in output.
When declaring a String you put the word in commas, dont need too for numbers
String name = "John";
Int number = 445;

System.out.println("Your name is" +name);
System.out.println("Your number is" +number);

This will give the output
Your name is John
Your number is 445

System.out.println(name);
System.out.println(number);

This will give the output
John
445

System.out.println("name");
System.out.println("number");

This will give the output
name
number

quotes are generally just used for Strings in declaring them. Also you can do this
System.out.println("your name is" +name+ "and your number is" +number);
This will give the output
Your name is John and your number is 445

Just think that if you are righting a string you need to put that in inverted commas. Nothing else