ShapefileExample.java

package org.geotools.data;

import java.io.File;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.geotools.data.collection.ListFeatureCollection;
import org.geotools.data.shapefile.ShapefileDataStoreFactory;
import org.geotools.data.shapefile.ShapefileDumper;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.geotools.feature.SchemaException;
import org.opengis.feature.Property;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.filter.Filter;

public class ShapefileExample {

public void use() throws Exception {
    // start use
    File file = new File("example.shp");
    Map<String, Object> map = new HashMap<>();
    map.put("url", file.toURI().toURL());

    DataStore dataStore = DataStoreFinder.getDataStore(map);
    String typeName = dataStore.getTypeNames()[0];

    FeatureSource<SimpleFeatureType, SimpleFeature> source = dataStore
            .getFeatureSource(typeName);
    Filter filter = Filter.INCLUDE; // ECQL.toFilter("BBOX(THE_GEOM, 10,20,30,40)")

    FeatureCollection<SimpleFeatureType, SimpleFeature> collection = source.getFeatures(filter);
    try (FeatureIterator<SimpleFeature> features = collection.features()) {
        while (features.hasNext()) {
            SimpleFeature feature = features.next();
            System.out.print(feature.getID());
            System.out.print(": ");
            System.out.println(feature.getDefaultGeometryProperty().getValue());
        }
    }
    // end use
}

@SuppressWarnings("rawtypes")
public void create() throws Exception {
    // start create
    FileDataStoreFactorySpi factory = new ShapefileDataStoreFactory();
    
    File file = new File("my.shp");
    Map map = Collections.singletonMap( "url", file.toURI().toURL() );
    
    DataStore myData = factory.createNewDataStore( map );
    SimpleFeatureType featureType =
            DataUtilities.createType( "my", "geom:Point,name:String,age:Integer,description:String" );
    myData.createSchema( featureType );
    // end create
}

@SuppressWarnings("rawtypes")
public void read() throws Exception {
    // start read
    File file = new File("my.shp");
    FileDataStore myData = FileDataStoreFinder.getDataStore( file );
    SimpleFeatureSource source = myData.getFeatureSource();
    SimpleFeatureType schema = source.getSchema();

    Query query = new Query(schema.getTypeName());
    query.setMaxFeatures(1);
    
    FeatureCollection<SimpleFeatureType, SimpleFeature> collection = source.getFeatures(query);
    try (FeatureIterator<SimpleFeature> features = collection.features()) {
        while (features.hasNext()) {
            SimpleFeature feature = features.next();
            System.out.println(feature.getID() + ": ");
            for (Property attribute : feature.getProperties()) {
                System.out.println("\t"+attribute.getName()+":"+attribute.getValue() );
            }
        }
    }
    // end read
}

public void dump() throws Exception {
    // start dumper
    ShapefileDumper dumper = new ShapefileDumper(new File("./target/demo"));
    // optiona, set a target charset (ISO-8859-1 is the default)
    dumper.setCharset(Charset.forName("ISO-8859-15"));
    // split when shp or dbf reaches 100MB
    int maxSize = 100 * 1024 * 1024;
    dumper.setMaxDbfSize(maxSize);
    dumper.setMaxDbfSize(maxSize);
    // actually dump data
    SimpleFeatureCollection fc = getFeatureCollection();
    dumper.dump(fc);
    // end dumper
}

private SimpleFeatureCollection getFeatureCollection() throws SchemaException {
    SimpleFeatureType featureType =
            DataUtilities.createType( "my", "geom:Point,name:String,age:Integer,description:String" );
    return new ListFeatureCollection(featureType);
}

}