Add hashcalc tool

hashcalc/pom.xml

@@ -0,0 +1,26 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <name>MineFork GUI Hash calculator</name>
+    <artifactId>hashcalc</artifactId>
+    <version>${project.parent.version}</version>
+
+    <parent>
+        <artifactId>guitools</artifactId>
+        <version>0.1-SNAPSHOT</version>
+        <groupId>org.scaminc.minefork.guitools</groupId>
+    </parent>
+
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.13.0</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+</project>

hashcalc/src/main/java/org/scaminc/minefork/guitools/hashcalc/HashCalc.java

@@ -0,0 +1,25 @@
+package org.scaminc.minefork.guitools.hashcalc;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class HashCalc {
+    public static void main(String[] args)
+    {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        while (true)
+        {
+            System.out.print("Type the string to hash (press ENTER to exit): ");
+            try {
+                String s = br.readLine();
+                if (s.isEmpty())
+                    break;
+
+                System.out.println("Hashcode: " + s.hashCode());
+            } catch (IOException ignored) {
+            }
+        }
+    }
+}

pom.xml

@@ -17,6 +17,7 @@
 	<modules>
 		<module>guicore</module>
 		<module>guibaker</module>
+		<module>hashcalc</module>
 		<!--<module>guieditor</module>-->
 	</modules>
 </project>