import java.util.*;
public class Example
{
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
System.out.println("Please enter a Double:");
double numDouble = in.nextDouble();
}
}
You type it in with your keyboard.
Answer: Your keyboard isn't connected to your computer or download the newest version of Java. Answer: If you clicked somewhere else, it may be that the Java applet doesn't "have the focus". You may have to click first, to have the Java applet (RuneScape) react to the keyboard.
A computer, keyboard and Java compiler.
In Java, you can use either a float or a double
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"real" numbers, in any programming language, are actually approximations of what is called a "real number" in math. Basically, a number that can handle decimals - but unlike the actual real numbers, of limited precision. In Java, the "real" data types are float, and double. double has greater precision. A "constant" in Java is similar to a variable, but its value can't be changed after it has been assigned a value.
All of the Java number classes have a parse[type] method, like parseInt() in Integer or parseDouble() in Double that convert Strings to primitive numbers. String s = getInput(); int var = Integer.parseInt(s);
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To convert a float to a double in Java, you can simply assign the float value to a double variable. Java will automatically perform the conversion for you. Here's an example: java float floatValue 10.5f; double doubleValue floatValue; In this example, the float value 10.5f is assigned to the double variable doubleValue, which will now hold the converted double value.
There is does a 'long' datatype in java, but no 'long double'.
No. Java uses no unsigned numbers.
Part of keyboard with letters and numbers etc