polish: restructuring code as pr feedback.

Author: vasantteja

sdk/metrics/src/main/java/io/opentelemetry/sdk/metrics/data/ExponentialHistogramBuckets.java

@@ -26,11 +26,6 @@
 @Immutable
 public interface ExponentialHistogramBuckets {
 
-  /**
-   * Create a ExponentialHistogramBuckets.
-   *
-   * @return a ExponentialHistogramBuckets.
-   */
   static ExponentialHistogramBuckets create(int scale, int offset, List<Long> bucketCounts) {
     return ImmutableExponentialHistogramBuckets.create(scale, offset, bucketCounts);
   }

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/DoubleExemplarDataTest.java

@@ -14,7 +14,7 @@
 import io.opentelemetry.api.trace.TraceState;
 import org.junit.jupiter.api.Test;
 
-public class DoubleExemplarDataTest {
+class DoubleExemplarDataTest {
 
   private static final String TRACE_ID = "00000000000000000000000000000061";
   private static final String SPAN_ID = "0000000000000061";

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/DoublePointDataTest.java

@@ -11,7 +11,7 @@
 import java.util.Collections;
 import org.junit.jupiter.api.Test;
 
-public class DoublePointDataTest {
+class DoublePointDataTest {
 
   @Test
   void create() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/ExponentialHistogramBucketsTest.java

@@ -10,7 +10,7 @@
 import java.util.Arrays;
 import org.junit.jupiter.api.Test;
 
-public class ExponentialHistogramBucketsTest {
+class ExponentialHistogramBucketsTest {
 
   @Test
   void create() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/ExponentialHistogramDataTest.java

@@ -10,7 +10,7 @@
 import java.util.Collections;
 import org.junit.jupiter.api.Test;
 
-public class ExponentialHistogramDataTest {
+class ExponentialHistogramDataTest {
 
   @Test
   void create() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/ExponentialHistogramPointDataTest.java

@@ -17,7 +17,7 @@
 import java.util.Collections;
 import org.junit.jupiter.api.Test;
 
-public class ExponentialHistogramPointDataTest {
+class ExponentialHistogramPointDataTest {
 
   @Test
   void create() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/GaugeDataTest.java

@@ -11,7 +11,7 @@
 import java.util.Collections;
 import org.junit.jupiter.api.Test;
 
-public class GaugeDataTest {
+class GaugeDataTest {
 
   @Test
   void createLongGaugeData() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/HistogramDataTest.java

@@ -10,7 +10,7 @@
 import java.util.Collections;
 import org.junit.jupiter.api.Test;
 
-public class HistogramDataTest {
+class HistogramDataTest {
 
   @Test
   void create() {

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/HistogramPointDataTest.java

@@ -12,7 +12,7 @@
 import java.util.ArrayList;
 import org.junit.jupiter.api.Test;
 
-public class HistogramPointDataTest {
+class HistogramPointDataTest {
 
   @Test
   void create() {
@@ -21,21 +21,21 @@ void create() {
             0,
             0,
             Attributes.empty(),
-            0.0,
+            3.0,
             /* hasMin= */ false,
-            0.0,
+            1.0,
             /* hasMax= */ false,
-            0.0,
+            2.0,
             new ArrayList<>(),
             ImmutableList.of(0L));
     assertThat(pointData.getStartEpochNanos()).isEqualTo(0);
     assertThat(pointData.getEpochNanos()).isEqualTo(0);
     assertThat(pointData.getAttributes()).isEqualTo(Attributes.empty());
-    assertThat(pointData.getSum()).isEqualTo(0.0);
+    assertThat(pointData.getSum()).isEqualTo(3.0);
     assertThat(pointData.getCount()).isEqualTo(0);
     assertThat(pointData.hasMin()).isFalse();
-    assertThat(pointData.getMin()).isEqualTo(0.0);
+    assertThat(pointData.getMin()).isEqualTo(1.0);
     assertThat(pointData.hasMax()).isFalse();
-    assertThat(pointData.getMax()).isEqualTo(0.0);
+    assertThat(pointData.getMax()).isEqualTo(2.0);
   }
 }

sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/data/LongExemplarDataTest.java

@@ -13,7 +13,7 @@
 import io.opentelemetry.api.trace.TraceState;
 import org.junit.jupiter.api.Test;
 
-public class LongExemplarDataTest {
+class LongExemplarDataTest {
 
   @Test
   void create() {