Не работает метод equals при распознавании текста

/*
 * Copyright (C) The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.android.gms.samples.vision.ocrreader;
 
import android.util.Log;
import android.util.SparseArray;
 
import com.google.android.gms.samples.vision.ocrreader.ui.camera.GraphicOverlay;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.text.TextBlock;
 
/**
 * A very simple Processor which gets detected TextBlocks and adds them to the overlay
 * as OcrGraphics.
 */
public class OcrDetectorProcessor implements Detector.Processor<TextBlock> {
 
    private GraphicOverlay<OcrGraphic> graphicOverlay;
 
    OcrDetectorProcessor(GraphicOverlay<OcrGraphic> ocrGraphicOverlay) {
        graphicOverlay = ocrGraphicOverlay;
    }
 
    /**
     * Called by the detector to deliver detection results.
     * If your application called for it, this could be a place to check for
     * equivalent detections by tracking TextBlocks that are similar in location and content from
     * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
     * multiple detections.
     */
 
    public class Main {
 
        public void main(String[] args) {
            String s1 = "speed";
            String s2 = new String("weight");
        }
    }
 
    @Override
    public void receiveDetections(Detector.Detections<TextBlock> detections)
    {
        graphicOverlay.clear();
        SparseArray<TextBlock> items = detections.getDetectedItems();
        for (int i = 0; i < items.size(); ++i) {
            TextBlock item = items.valueAt(i);
            if (item != null && item.getValue() != null) {
                Log.d("OcrDetectorProcessor", "Text detected! " + item.getValue());
                OcrGraphic graphic = new OcrGraphic(graphicOverlay, item);
                graphicOverlay.add(graphic);
            }
 
 
          if (s1.equals(item)) {
                System.out.println("Совпадение");
            }
            if (s2.equals(item)) {
                System.out.println("Совпадение");
            }
        }
    }
 
    /**
     * Frees the resources associated with this detection processor.
     */
    @Override
    public void release() {
        graphicOverlay.clear();
    }
}

/*
 * Copyright (C) The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.android.gms.samples.vision.ocrreader;
 
import android.util.Log;
import android.util.SparseArray;
 
import com.google.android.gms.samples.vision.ocrreader.ui.camera.GraphicOverlay;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.text.TextBlock;
 
/**
 * A very simple Processor which gets detected TextBlocks and adds them to the overlay
 * as OcrGraphics.
 */
 
 
public class OcrDetectorProcessor implements Detector.Processor<TextBlock> {
 
    private GraphicOverlay<OcrGraphic> graphicOverlay;
 
    OcrDetectorProcessor(GraphicOverlay<OcrGraphic> ocrGraphicOverlay) {
        graphicOverlay = ocrGraphicOverlay;
    }
 
    /**
     * Called by the detector to deliver detection results.
     * If your application called for it, this could be a place to check for
     * equivalent detections by tracking TextBlocks that are similar in location and content from
     * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
     * multiple detections.
     */
 
 
    @Override
    public void receiveDetections(Detector.Detections<TextBlock> detections)
    {
        graphicOverlay.clear();
        SparseArray<TextBlock> items = detections.getDetectedItems();
        for (int i = 0; i < items.size(); ++i) {
            TextBlock item = items.valueAt(i);
            if (item != null && item.getValue() != null) {
                Log.d("OcrDetectorProcessor", "Text detected! " + item.getValue());
                OcrGraphic graphic = new OcrGraphic(graphicOverlay, item);
                graphicOverlay.add(graphic);
            }
 
            String s1 = null;
            String s2 = new String("weight");
 
            if (item.equals(s1)) {
                System.out.println("Совпадение");
            }
            if (s2.equals(item)) {
                System.out.println("Совпадение");
            }
        }
    }
 
    /**
     * Frees the resources associated with this detection processor.
     */
    @Override
    public void release() {
        graphicOverlay.clear();
    }
}