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// onjava/BasicSupplier.java

// (c)2017 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Supplier from a class with a no-arg constructor

package onjava;

import java.util.function.*;

public class BasicSupplier<T> implements Supplier<T> {

private Class<T> type;

public BasicSupplier(Class<T> type) {

this.type = type;

}

@Override

public T get() {

try {

// Assumes type is a public class:

return type.newInstance();

} catch(InstantiationException |

IllegalAccessException e) {

throw new RuntimeException(e);

}

}

// Produce a default Supplier from a type token:

public static <T> Supplier<T> create(Class<T> type) {

return new BasicSupplier<>(type);

}

}