Polish "Remove boxing"

See gh-18552

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/AbstractDataSourcePoolMetadataTests.java

@@ -56,7 +56,7 @@ abstract class AbstractDataSourcePoolMetadataTests<D extends AbstractDataSourceP
 		JdbcTemplate jdbcTemplate = new JdbcTemplate(getDataSourceMetadata().getDataSource());
 		jdbcTemplate.execute((ConnectionCallback<Void>) (connection) -> null);
 		assertThat(getDataSourceMetadata().getActive()).isEqualTo(0);
-		assertThat(getDataSourceMetadata().getUsage()).isEqualTo((float) 0);
+		assertThat(getDataSourceMetadata().getUsage()).isEqualTo(0f);
 	}
 
 	@Test
@@ -64,7 +64,7 @@ abstract class AbstractDataSourcePoolMetadataTests<D extends AbstractDataSourceP
 		JdbcTemplate jdbcTemplate = new JdbcTemplate(getDataSourceMetadata().getDataSource());
 		jdbcTemplate.execute((ConnectionCallback<Void>) (connection) -> {
 			assertThat(getDataSourceMetadata().getActive()).isEqualTo(1);
-			assertThat(getDataSourceMetadata().getUsage()).isEqualTo(0.5F);
+			assertThat(getDataSourceMetadata().getUsage()).isEqualTo(0.5f);
 			return null;
 		});
 	}

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/CommonsDbcp2DataSourcePoolMetadataTests.java

@@ -61,7 +61,7 @@ class CommonsDbcp2DataSourcePoolMetadataTests
 	@Test
 	void getPoolUsageWithUnlimitedPool() {
 		DataSourcePoolMetadata unlimitedDataSource = createDataSourceMetadata(0, -1);
-		assertThat(unlimitedDataSource.getUsage()).isEqualTo(-1F);
+		assertThat(unlimitedDataSource.getUsage()).isEqualTo(-1f);
 	}
 
 	@Override