[jeelink] adapt to core StringUtils (#15771)

Signed-off-by: Leo Siepel <leosiepel@gmail.com>

bundles/org.openhab.binding.jeelink/src/main/java/org/openhab/binding/jeelink/internal/lacrosse/LaCrosseTemperatureSensorHandler.java

@@ -20,13 +20,13 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 import org.openhab.binding.jeelink.internal.JeeLinkSensorHandler;
 import org.openhab.binding.jeelink.internal.ReadingPublisher;
 import org.openhab.binding.jeelink.internal.RollingAveragePublisher;
 import org.openhab.binding.jeelink.internal.RollingReadingAverage;
 import org.openhab.binding.jeelink.internal.config.LaCrosseTemperatureSensorConfig;
-import org.openhab.binding.jeelink.internal.util.StringUtils;
 import org.openhab.core.library.types.OnOffType;
 import org.openhab.core.library.types.QuantityType;
 import org.openhab.core.library.unit.SIUnits;
@@ -38,6 +38,7 @@ import org.openhab.core.thing.ThingStatus;
 import org.openhab.core.thing.binding.builder.ChannelBuilder;
 import org.openhab.core.thing.binding.builder.ThingBuilder;
 import org.openhab.core.thing.type.ChannelTypeUID;
+import org.openhab.core.util.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -93,7 +94,8 @@ public class LaCrosseTemperatureSensorHandler extends JeeLinkSensorHandler<LaCro
                         missingChannels.add(ChannelBuilder
                                 .create(new ChannelUID(getThing().getUID(), channelName + idSuffix), "Number")
                                 .withType(new ChannelTypeUID(getThing().getThingTypeUID().getBindingId(), channelName))
-                                .withLabel(StringUtils.capitalize(channelName + labelSuffix)).build());
+                                .withLabel(Objects.requireNonNull(StringUtils.capitalize(channelName + labelSuffix)))
+                                .build());
                     }
                 }
                 missingChannels.addAll(getThing().getChannels());

bundles/org.openhab.binding.jeelink/src/main/java/org/openhab/binding/jeelink/internal/lacrosse/LgwSensorHandler.java

@@ -17,11 +17,11 @@ import static org.openhab.core.library.unit.MetricPrefix.*;
 
 import java.math.BigDecimal;
 import java.math.RoundingMode;
+import java.util.Objects;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
 import org.openhab.binding.jeelink.internal.JeeLinkSensorHandler;
 import org.openhab.binding.jeelink.internal.ReadingPublisher;
-import org.openhab.binding.jeelink.internal.util.StringUtils;
 import org.openhab.core.library.types.QuantityType;
 import org.openhab.core.library.unit.SIUnits;
 import org.openhab.core.library.unit.Units;
@@ -31,6 +31,7 @@ import org.openhab.core.thing.ThingStatus;
 import org.openhab.core.thing.binding.builder.ChannelBuilder;
 import org.openhab.core.thing.binding.builder.ThingBuilder;
 import org.openhab.core.thing.type.ChannelTypeUID;
+import org.openhab.core.util.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -78,7 +79,8 @@ public class LgwSensorHandler extends JeeLinkSensorHandler<LgwReading> {
                                     .create(new ChannelUID(getThing().getUID(), HUMIDITY_CHANNEL), "Number:Humidity")
                                     .withType(new ChannelTypeUID(getThing().getThingTypeUID().getBindingId(),
                                             HUMIDITY_CHANNEL))
-                                    .withLabel(StringUtils.capitalize(HUMIDITY_CHANNEL)).build());
+                                    .withLabel(Objects.requireNonNull(StringUtils.capitalize(HUMIDITY_CHANNEL)))
+                                    .build());
                             updateThing(thingBuilder.build());
 
                             hasHumidityChannel = true;
@@ -94,7 +96,8 @@ public class LgwSensorHandler extends JeeLinkSensorHandler<LgwReading> {
                                     .create(new ChannelUID(getThing().getUID(), PRESSURE_CHANNEL), "Number:Pressure")
                                     .withType(new ChannelTypeUID(getThing().getThingTypeUID().getBindingId(),
                                             PRESSURE_CHANNEL))
-                                    .withLabel(StringUtils.capitalize(PRESSURE_CHANNEL)).build());
+                                    .withLabel(Objects.requireNonNull(StringUtils.capitalize(PRESSURE_CHANNEL)))
+                                    .build());
                             updateThing(thingBuilder.build());
 
                             hasPressureChannel = true;

bundles/org.openhab.binding.jeelink/src/main/java/org/openhab/binding/jeelink/internal/util/StringUtils.java

@@ -1,48 +0,0 @@
-/**
- * Copyright (c) 2010-2023 Contributors to the openHAB project
- *
- * See the NOTICE file(s) distributed with this work for additional
- * information.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License 2.0 which is available at
- * http://www.eclipse.org/legal/epl-2.0
- *
- * SPDX-License-Identifier: EPL-2.0
- */
-package org.openhab.binding.jeelink.internal.util;
-
-import org.eclipse.jdt.annotation.NonNullByDefault;
-
-/**
- * Utility class for strings
- *
- * @author Leo Siepel - Initial contribution
- */
-@NonNullByDefault
-public final class StringUtils {
-
-    /**
-     * <p>
-     * Capitalizes a String changing the first character to title case.
-     * No other characters are changed.
-     * </p>
-     *
-     * <pre>
-     * StringUtils.capitalize(null)  = null
-     * StringUtils.capitalize("")    = ""
-     * StringUtils.capitalize("cat") = "Cat"
-     * StringUtils.capitalize("cAt") = "CAt"
-     * StringUtils.capitalize("'cat'") = "'cat'"
-     * </pre>
-     *
-     * @param val the String to capitalize, may not be null
-     * @return the capitalized String
-     */
-    public static String capitalize(String val) {
-        if (val.length() == 0) {
-            return val;
-        }
-        return val.substring(0, 1).toUpperCase() + val.substring(1);
-    }
-}