hotcoder
diff --git a/‎metrics-core/src/main/java/com/yammer/metrics/Metrics.java
Lines changed: 5 additions & 5 deletions b/‎metrics-core/src/main/java/com/yammer/metrics/Metrics.java
Lines changed: 5 additions & 5 deletions
diff --git a/‎metrics-core/src/main/java/com/yammer/metrics/core/Clock.java
Lines changed: 1 addition & 1 deletion b/‎metrics-core/src/main/java/com/yammer/metrics/core/Clock.java
Lines changed: 1 addition & 1 deletion
diff --git a/‎metrics-core/src/main/java/com/yammer/metrics/core/Counter.java
Lines changed: 7 additions & 27 deletions b/‎metrics-core/src/main/java/com/yammer/metrics/core/Counter.java
Lines changed: 7 additions & 27 deletions
diff --git a/‎metrics-core/src/main/java/com/yammer/metrics/core/CounterImpl.java
Lines changed: 44 additions & 0 deletions b/‎metrics-core/src/main/java/com/yammer/metrics/core/CounterImpl.java
Lines changed: 44 additions & 0 deletions
@@ -75,23 +75,23 @@ private static void append(StringBuilder builder, String part) {
     }
 
     public static Counter counter() {
-        return new Counter();
+        return new CounterImpl();
     }
 
     public static Histogram histogram() {
         return histogram(Histogram.SampleType.UNIFORM);
     }
 
-    public static Histogram histogram(Histogram.SampleType type) {
+    public static Histogram histogram(HistogramImpl.SampleType type) {
         return histogram(type.newSample());
     }
 
     public static Histogram histogram(Sample sample) {
-        return new Histogram(sample);
+        return new HistogramImpl(sample);
     }
 
     public static Meter meter(String eventType, TimeUnit rateUnit, Clock clock) {
-        return new Meter(eventType, rateUnit, clock);
+        return new MeterImpl(eventType, rateUnit, clock);
     }
 
     public static Meter meter(String eventType, TimeUnit rateUnit) {
@@ -107,7 +107,7 @@ public static Meter meter() {
     }
 
     public static Timer timer(TimeUnit durationUnit, TimeUnit rateUnit, Clock clock) {
-        return new Timer(durationUnit, rateUnit, clock);
+        return new TimerImpl(durationUnit, rateUnit, clock);
     }
 
     public static Timer timer(TimeUnit durationUnit, TimeUnit rateUnit) {
 
@@ -4,7 +4,7 @@
 import java.lang.management.ThreadMXBean;
 
 /**
- * An abstraction for how time passes. It is passed to {@link Timer} to track timing.
+ * An abstraction for how time passes. It is passed to {@link Timer} and others to track timing.
  */
 public abstract class Clock {
     /**
 
@@ -1,62 +1,42 @@
 package com.yammer.metrics.core;
 
-import java.util.concurrent.atomic.AtomicLong;
-
 /**
  * An incrementing and decrementing counter metric.
  */
-public class Counter implements Metric {
-    private final AtomicLong count;
-
-    public Counter() {
-        this.count = new AtomicLong(0);
-    }
-
+public interface Counter extends Metric {
     /**
      * Increment the counter by one.
      */
-    public void inc() {
-        inc(1);
-    }
+    void inc();
 
     /**
      * Increment the counter by {@code n}.
      *
      * @param n the amount by which the counter will be increased
      */
-    public void inc(long n) {
-        count.addAndGet(n);
-    }
+    void inc(long n);
 
     /**
      * Decrement the counter by one.
      */
-    public void dec() {
-        dec(1);
-    }
+    void dec();
 
     /**
      * Decrement the counter by {@code n}.
      *
      * @param n the amount by which the counter will be increased
      */
-    public void dec(long n) {
-        count.addAndGet(0 - n);
-    }
+    void dec(long n);
 
     /**
      * Returns the counter's current value.
      *
      * @return the counter's current value
      */
-    public long getCount() {
-        return count.get();
-    }
+    long getCount();
 
     /**
      * Resets the counter to 0.
      */
-    public void clear() {
-        count.set(0);
-    }
+    void clear();
 }
@@ -0,0 +1,44 @@
+package com.yammer.metrics.core;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * The default implementation of {@link Counter}.
+ */
+public class CounterImpl implements Counter {
+    private final AtomicLong count;
+
+    public CounterImpl() {
+        this.count = new AtomicLong(0);
+    }
+
+    @Override
+    public void inc() {
+        inc(1);
+    }
+
+    @Override
+    public void inc(long n) {
+        count.addAndGet(n);
+    }
+
+    @Override
+    public void dec() {
+        dec(1);
+    }
+
+    @Override
+    public void dec(long n) {
+        count.addAndGet(0 - n);
+    }
+
+    @Override
+    public long getCount() {
+        return count.get();
+    }
+
+    @Override
+    public void clear() {
+        count.set(0);
+    }
+}
Original file line number	Diff line number	Diff line change
`@@ -75,23 +75,23 @@ private static void append(StringBuilder builder, String part) {`
`75`	`75`	`}`
`76`	`76`
`77`	`77`	`public static Counter counter() {`
`78`		`- return new Counter();`
	`78`	`+ return new CounterImpl();`
`79`	`79`	`}`
`80`	`80`
`81`	`81`	`public static Histogram histogram() {`
`82`	`82`	`return histogram(Histogram.SampleType.UNIFORM);`
`83`	`83`	`}`
`84`	`84`
`85`		`- public static Histogram histogram(Histogram.SampleType type) {`
	`85`	`+ public static Histogram histogram(HistogramImpl.SampleType type) {`
`86`	`86`	`return histogram(type.newSample());`
`87`	`87`	`}`
`88`	`88`
`89`	`89`	`public static Histogram histogram(Sample sample) {`
`90`		`- return new Histogram(sample);`
	`90`	`+ return new HistogramImpl(sample);`
`91`	`91`	`}`
`92`	`92`
`93`	`93`	`public static Meter meter(String eventType, TimeUnit rateUnit, Clock clock) {`
`94`		`- return new Meter(eventType, rateUnit, clock);`
	`94`	`+ return new MeterImpl(eventType, rateUnit, clock);`
`95`	`95`	`}`
`96`	`96`
`97`	`97`	`public static Meter meter(String eventType, TimeUnit rateUnit) {`
`@@ -107,7 +107,7 @@ public static Meter meter() {`
`107`	`107`	`}`
`108`	`108`
`109`	`109`	`public static Timer timer(TimeUnit durationUnit, TimeUnit rateUnit, Clock clock) {`
`110`		`- return new Timer(durationUnit, rateUnit, clock);`
	`110`	`+ return new TimerImpl(durationUnit, rateUnit, clock);`
`111`	`111`	`}`
`112`	`112`
`113`	`113`	`public static Timer timer(TimeUnit durationUnit, TimeUnit rateUnit) {`