Can I have macros in Java source files

Question

In my program I\'m reading integers form console many times. Every time, I need to type this line.

new Scanner(System.in).nextInt(); 

I\'m

Answer 1

Use a utility class and static import.

The utility class:

package my.utils;

public class ScannerUtils {
  private ScannerUtils() {}

  public static int readInt() {
    return new Scanner(System.in).nextInt();
  }
}

Using the utility class:

package my.examples;

import static my.utils.ScannerUtils.*;

class Example {
  void foo() {
    int i = readInt();
  }
}

As others have said, you should probably cache your scanner, but that is a separate topic.