java homework help

[jenniferrlie]

im working on some java homework. i was wondering if anyone can help me out. im trying to write a program that prompts the user to enter a decimal number and then outputs this number rounded to two decimal places.

[r035198x]

Read about System.out.printf.

[jenniferrlie]

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.text.NumberFormat;

public class CH3EX1{
public static void main(String[] args) throws IOException{
BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please enter a decimal number.");
String input = console.readLine();
double decimal = Double.parseDouble(input);
NumberFormat formatter = NumberFormat.getNumberInstance();
formatter.setMaximumFractionDigits(2);
formatter.setMinimumFractionDigits(2);
System.out.println("Result:");
System.out.println(formatter.format(decimal));
System.exit(0);
}
}

[Dieter]

i think you can do it like this but not sure, for you to figure out how...

rounding double to two decimal places

u can use the import java.util.Scanner; function to give your user the right to enter someting and read it.

have fun,

Dieter

[Dieter]

ow your in a console app, my bad then.

We don't use that at school. We use the System.out.println

my bad then

all the best,

Dieter

[r035198x]

Yep your code is right, well done.

These days you can use the Scanner class to get input from the user though.