no standard input in java?

dlofnep

Just started java in college. Have coded in C/C++ before.. We have to use this precoded keyboard reader which we invoke via Keyboard.readVariabletype();..

Which means we have to drop this keyboard.java file in every directory that has a script we want to compile that requires keyboard input. This seems like a REALLY backwards way for something basic as input.

Is there not an inherent standard input in java?

Mutant_Fruit

import java.util.*;
import java.io.*;

public void Main()
{
BufferedReader standard = new BufferedReader(new InputStreamReader(System.in));

// Standard.ReadLine(); and parse your input from that.
}

That should work (note: i don't know java).

dlofnep

Why are we using this backwards way in college then?

Hobbes

Basically you have to hook yourself to the System.in stream and then parse it. Better to make it a method and read it when you need it.

In Java 1.4.

		InputStreamReader converter = new InputStreamReader (System.in);
		BufferedReader in = new BufferedReader (converter);

		System.out.print("Enter String: ");
		String output = in.readLine();
		System.out.println("*" + output + "*");
		
		in.close();
		converter.close();

In Java 1.5

		Scanner scanner = new Scanner(System.in, "ISO-8859-1");
		System.out.print("Type in a String: ");
		String output = scanner.useDelimiter("\\r").next();
		scanner.close();
		
		System.out.println("*" + output + "*");

henbane

It's pretty standard in early OO courses in college. They're more interested in getting students to think about OO correctly rather than learn java's intricacies. That was the message I got in college whenever I asked similar questions.

dlofnep

Ok cheers guys, appreciated.