Inputing into variables.

Question

I'm a C++ programmer, but my teacher wants me to program a herkle game in Java. I could easily do it in C++, and I know that the two languages are similar, but I dont know alot of the keywords, like in C++, you'd use cout <<. In java, you'd use system.out.println(". What i'm trying to get to is I need to learn how to input into variables. Like let the user assign a value to a variable or string. Thaks for any help

Answer 1

Gui = Graphical User Interface; Command Line = DOS
also, just use this file, save it as PrimitiveInput.java and compile it with the javac tool that comes with the Java Development Kit:
import java.io.*;
* This class provides a collection of basic methods to perform
* primitive type console input.
public class PrimitiveInput
static BufferedReader in = new BufferedReader(
new InputStreamReader(System.in));
* read the next line from the keyboard as a String
* @return the line as a String
* @throws IOException
public static String readString() throws IOException
return in.readLine() ;
* read the first character on the line
* @return the first character on the line
* @throws IOException
public static char readCharacter() throws IOException
String s = in.readLine();
if (s.length() == 0)
return '\0';
else
return s.charAt(0);
* read the next line as an integer
* @return the line as an integer
* @throws IOException
public static int readInteger() throws IOException
try
String line = in.readLine();
int i = Integer.valueOf(line.trim()).intValue();
return i;
catch (Exception e)
throw new IOException("invalid integer format");
* read the next line as a float
* @return the line as a float
* @throws IOException
public static float readFloat() throws IOException
try
String line = in.readLine();
return Float.valueOf(line.trim()).floatValue();
catch (Exception e)
throw new IOException("invalid float format");
* read the next line as a double
* @return the line as a double
* @throws IOException
public static double readDouble() throws IOException
try
String line = in.readLine();
return Double.valueOf(line.trim()).doubleValue();
catch (Exception e)
throw new IOException("invalid double format");
} // End PrimitiveInput.java