### Question:
SimpleKeyFile implements SecureKeyStore, Configurable, LogSource { void load () throws SecureKeyStoreException { InputStream in; try { if (!file.canRead()) throw new SecureKeyStoreException("Can't read from file: " + file.getCanonicalPath()); in = new BufferedInputStream(new FileInputStream(file)); try { props.load(in); } finally { in.close(); } } catch (Exception e) { throw new SecureKeyStoreException(e); } } SimpleKeyFile();  SimpleKeyFile(String keyFileName); void init(String keyFileName); @Override void setLogger(Logger logger, String realm); @Override Logger getLogger(); @Override String getRealm(); @Override void setConfiguration(Configuration cfg); @Override synchronized SecureKey getKey(String alias); @Override synchronized void setKey(String alias, SecureKey secureKey); String getProperty(String alias, String subName); void setProperty(String alias, String subName, String value); @Override Map<String, SecureKey> getKeys();  }### Answer:
@Test public void testLoadThrowsSecureKeyStoreException() throws Throwable { SimpleKeyFile simpleKeyFile = new SimpleKeyFile(); try { simpleKeyFile.load(); fail("Expected SecureKeyStoreException to be thrown"); } catch (SecureKeyStore.SecureKeyStoreException ex) { if (isJavaVersionAtMost(JAVA_14)) { assertEquals("java.lang.NullPointerException", ex.getMessage(), "ex.getMessage()"); assertNull(ex.getNested().getMessage(), "ex.getNested().getMessage()"); } else { assertEquals("java.lang.NullPointerException: Cannot invoke \"java.io.File.canRead()\" because \"this.file\" is null", ex.getMessage(), "ex.getMessage()"); assertEquals("Cannot invoke \"java.io.File.canRead()\" because \"this.file\" is null", ex.getNested().getMessage(), "ex.getNested().getMessage()"); } assertNull(simpleKeyFile.file, "simpleKeyFile.file"); assertEquals(0, simpleKeyFile.props.size(), "simpleKeyFile.props.size()"); } }