improve log class

src/main/java/fr/insa/clavardator/util/Log.java

@@ -1,67 +1,59 @@
 package fr.insa.clavardator.util;
 
+import org.jetbrains.annotations.Nullable;
+
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
 public class Log {
-    /**
-     * Verbose level: 0 = nothing,
-     *                1: errors,
-     *                2: errors & warnings,
-     *                3: errors & warnings & debug,
-     *                4: all
-     */
-    public static int verboseLevel = 0;
-    
-    public static void v(String prefix, String message) {
-        v(prefix, message, null);
-    }
-    public static void v(String prefix, String message, Exception e) {
-        if (verboseLevel >= 4) {
-            Date date = new Date();
-            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
-            System.out.println(sdf.format(date) + " | V | "+ prefix + ": " + message);
-            if (e != null)
-                e.printStackTrace();
-        }
-    }
+	/**
+	 * Verbose level: 0 = nothing,
+	 * 1: errors,
+	 * 2: errors & warnings,
+	 * 3: errors & warnings & debug,
+	 * 4: all
+	 */
+	public static int verboseLevel = 0;
+
+	private static void print(String prefix, String message, String mode, int requiredLevel, @Nullable Exception e) {
+			if (verboseLevel >= requiredLevel) {
+					Date date = new Date();
+					SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
+					System.out.println(sdf.format(date) + " | " + mode + " | " + prefix + ": " + message);
+					if (e != null)
+							e.printStackTrace();
+			}
+	}
+
+	public static void v(String prefix, String message) {
+		v(prefix, message, null);
+	}
+
+	public static void v(String prefix, String message, Exception e) {
+		print(prefix, message, "V", 4, e);
+	}
+
+	public static void d(String prefix, String message) {
+		d(prefix, message, null);
+	}
+
+	public static void d(String prefix, String message, Exception e) {
+		print(prefix, message, "D", 3, e);
+	}
+
+	public static void w(String prefix, String message) {
+		w(prefix, message, null);
+	}
 
-    public static void d(String prefix, String message) {
-        d(prefix, message, null);
-    }
-    public static void d(String prefix, String message, Exception e) {
-        if (verboseLevel >= 3) {
-            Date date = new Date();
-            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
-            System.out.println(sdf.format(date) + " | D | "+ prefix + ": " + message);
-            if (e != null)
-                e.printStackTrace();
-        }
-    }
+	public static void w(String prefix, String message, Exception e) {
+		print(prefix, message, "W", 2, e);
+	}
 
-    public static void w(String prefix, String message) {
-        w(prefix, message, null);
-    }
-    public static void w(String prefix, String message, Exception e) {
-        if (verboseLevel >= 2) {
-            Date date = new Date();
-            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
-            System.out.println(sdf.format(date) + " | W | "+ prefix + ": " + message);
-            if (e != null)
-                e.printStackTrace();
-        }
-    }
+	public static void e(String prefix, String message) {
+		e(prefix, message, null);
+	}
 
-    public static void e(String prefix, String message) {
-        e(prefix, message, null);
-    }
-    public static void e(String prefix, String message, Exception e) {
-        if (verboseLevel >= 1) {
-            Date date = new Date();
-            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
-            System.out.println(sdf.format(date) + " | E | "+ prefix + " " + message);
-            if (e != null)
-                e.printStackTrace();
-        }
-    }
+	public static void e(String prefix, String message, Exception e) {
+		print(prefix, message, "E", 1, e);
+	}
 }