import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

import java.io.ByteArrayInputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Closeables}.
 *

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.xml;

import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.exception.SAXRuntimeException;
import org.w3c.dom.Document;

import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotEmpty;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Properties;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.exception.ResourceNotFoundRuntimeException;
import org.codelibs.core.jar.JarFileUtil;

import com.google.errorprone.annotations.DoNotCall;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.EOFException;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * An implementation of {@link DataInput} that uses little-endian byte ordering for reading {@code
 * short}, {@code int}, {@code float}, {@code double}, and {@code long} values.
 *

       * file that gets bundled with the application.
       */
      private fun trustedCertificatesInputStream(): InputStream {
        ... // Full source omitted. See sample.
      }

      private fun trustManagerForCertificates(inputStream: InputStream): X509TrustManager {
        ... // Full source omitted. See sample.
      }
    ```
=== ":material-language-java: Java"
    ```java

package okhttp3.sample;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.SecureRandom;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
import okhttp3.mockwebserver.Dispatcher;

    return completableFuture
  }

  @Test
  fun urlConnection() {
    val conn = engine.openConnection(URL("https://google.com/robots.txt")) as HttpURLConnection

    val text =
      conn.inputStream.use {
        it.bufferedReader().readText()
      }

    assertEquals(200, conn.responseCode)

    assertTrue(text.contains("Disallow"))
  }

            throwValidationErrorApi(messages -> messages.addErrorsFailedToUploadProtwordsFile(GLOBAL));
            return null;
        });
        try (InputStream inputStream = form.stemmerOverrideFile.getInputStream()) {
            file.update(inputStream);
        } catch (final IOException e) {
            logger.warn("Failed to process a request.", e);

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;

import org.codelibs.core.exception.IORuntimeException;

/**
 * Utility class for {@link Reader} operations.
 *
 * @author higa
 */

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import java.nio.file.Files;