Or how to replace annoying System.out.println with concise println

Some features of Java are annoying for me, especially after several years of Scala experience. First of all: why should I use System.out.println instead of println!

You won’t find such a lengthy construction in other languages derived from Java: Scala, Groovy or Kotlin

It appears , that this problem can be solved easily. I wrote a tinny library.

package ru.exxo.jutil;

import java.util.Locale;
public interface Printer {

    static  void print(T t) {
        System.out.print(t);
    }

    static  void println(T t) {
        System.out.println(t);
    }

    static void printf(String str, Object... objects) {
        System.out.printf(str, objects);
    }

    static void printf(Locale locale, String str, Object... objects) {
        System.out.printf(locale, str, objects);
    }
}

Now one can import these static methods:

import static Printer.*;

And forget of System.out for good

public class PrinterDemo {
    private static class Demo {
        public Demo(String str) {
            this.str = str;
        }

        private String str;

        @Override
        public String toString() {
            return "Demo{" +
                    "str='" + str + '\'' +
                    '}';
        }
    }
    public static void main(String[] args) {

        Demo demo = new Demo("It's a Demo");
        println("I can print!");
        println(10);
        println(true);
        println(demo);

        printf("It's %TA, %<tH:%<tM. It's %s", new Date(), "good");
        printf(Locale.forLanguageTag("RU"), "%n%,.2f", 10000.5);
    }
}

After a month of using “new style of printing” I loaded this lib to the Maven Central.

Maven

<dependency>
     <groupId>ru.exxo.jutil</groupId>
     <artifactId>printer</artifactId>
     <version>1.2</version>
 </dependency>

Gradle

implementation 'ru.exxo.jutil:printer:1.2'

See it on github