java.lang.reflect.Constructor.toString()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.lang.reflect.Constructor.toString()方法的一些代码示例，展示了Constructor.toString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Constructor.toString()方法的具体详情如下：
包路径：java.lang.reflect.Constructor
类名称：Constructor
方法名：toString

Constructor.toString介绍

[英]Returns a string containing a concise, human-readable description of this constructor. The format of the string is:

  1. modifiers (if any)
  2. declaring class name
  3. '('
  4. parameter types, separated by ',' (if any)
  5. ')'
  6. 'throws' plus exception types, separated by ',' (if any)
    For example: public String(byte[],String) throws UnsupportedEncodingException
    [中]

代码示例

代码示例来源：origin: spring-projects/spring-loaded

public static String callToString(Constructor thiz) {
  return thiz.toString();
}

代码示例来源：origin: jdbi/jdbi

@Override
  public String toString() {
    return constructor.toString();
  }
}

代码示例来源：origin: org.testng/testng

@Override
 public String toString() {
  if (m_method != null) return m_method.toString();
  else return m_constructor.toString();
 }
}

代码示例来源：origin: cbeust/testng

@Override
public String toString() {
 if (m_method != null) return m_method.toString();
 else return m_constructor.toString();
}

代码示例来源：origin: bootique/bootique

private static Type propertyTypeFromConstructor(Constructor maybeConstructor) {
  Type[] paramTypes = maybeConstructor.getGenericParameterTypes();
  if (paramTypes.length != 1) {
    throw new IllegalStateException("Constructor '" + maybeConstructor.toString()
        + "' is annotated with @BQConfigProperty, but does not match expected signature."
        + " It must take exactly one parameter");
  }
  return paramTypes[0];
}

代码示例来源：origin: Bukkit/Bukkit

protected ConfigurationSerializable deserializeViaCtor(Constructor<? extends ConfigurationSerializable> ctor, Map<String, ?> args) {
  try {
    return ctor.newInstance(args);
  } catch (Throwable ex) {
    Logger.getLogger(ConfigurationSerialization.class.getName()).log(
        Level.SEVERE,
        "Could not call constructor '" + ctor.toString() + "' of " + clazz + " for deserialization",
        ex instanceof InvocationTargetException ? ex.getCause() : ex);
  }
  return null;
}

代码示例来源：origin: thinkaurelius/titan

@SuppressWarnings("unchecked")
private static <V> V instantiate(String policyClassName, Integer[] args, String raw) throws Exception {
  for (Constructor<?> con : Class.forName(policyClassName).getConstructors()) {
    Class<?>[] parameterTypes = con.getParameterTypes();
    // match constructor by number of arguments first
    if (args.length != parameterTypes.length)
      continue;
    // check if the constructor parameter types are compatible with argument types (which are integer)
    // note that we allow long.class arguments too because integer is cast to long by runtime.
    boolean intsOrLongs = true;
    for (Class<?> pc : parameterTypes) {
      if (!pc.equals(int.class) && !pc.equals(long.class)) {
        intsOrLongs = false;
        break;
      }
    }
    // we found a constructor with required number of parameters but times didn't match, let's carry on
    if (!intsOrLongs)
      continue;
    if (log.isDebugEnabled())
      log.debug("About to instantiate class {} with {} arguments", con.toString(), args.length);
    return (V) con.newInstance(args);
  }
  throw new Exception("Failed to identify a class matching the Astyanax Retry Policy config string \"" + raw + "\"");
}

代码示例来源：origin: AdoptOpenJDK/jitwatch

public MetaConstructor(Constructor<?> constructor, MetaClass methodClass)
{
  super(StringUtil.getUnqualifiedMemberName(constructor.getName()));
  
  this.constructorToString = constructor.toString();
  this.metaClass = methodClass;
  returnType = Void.TYPE;
  
  paramTypes = Arrays.asList(constructor.getParameterTypes());
  modifier = constructor.getModifiers();
  
  isVarArgs = constructor.isVarArgs();
  if (DEBUG_MEMBER_CREATION)
  {
    logger.debug("Created MetaConstructor: {}", toString());
  }
}

代码示例来源：origin: AdoptOpenJDK/jitwatch

public MetaConstructor(Constructor<?> constructor, MetaClass methodClass)
{
  super(StringUtil.getUnqualifiedMemberName(constructor.getName()));
  
  this.constructorToString = constructor.toString();
  this.metaClass = methodClass;
  returnType = Void.TYPE;
  
  paramTypes = Arrays.asList(constructor.getParameterTypes());
  modifier = constructor.getModifiers();
  
  isVarArgs = constructor.isVarArgs();
  if (DEBUG_MEMBER_CREATION)
  {
    logger.debug("Created MetaConstructor: {}", toString());
  }
}

代码示例来源：origin: robovm/robovm

result.append(declaringClass.getName());
result.append("(");
result.append(toString(parameterTypes));
result.append(")");
if (exceptionTypes != null && exceptionTypes.length != 0) {
  result.append(" throws ");
  result.append(toString(exceptionTypes));

代码示例来源：origin: robovm/robovm

if (!checkAccessible(caller, this)) {
  throw new IllegalAccessException(String.format("Attempt to access constructor %s(%s) from class %s", 
      clazz.getName(), toString(parameterTypes), caller.getName()));

代码示例来源：origin: jenkinsci/configuration-as-code-plugin

".\n Constructor: " + constructor.toString() +
".\n Arguments: " + argumentTypes, ex);

代码示例来源：origin: org.elasticsearch/elasticsearch

@Override
  public String toString() {
    return constructor.toString();
  }
}

代码示例来源：origin: stackoverflow.com

Class obj2Class = object2.getClass();
try
{
 Constructor[] ctors = obj2Class.getDeclaredConstructors();
 for (Constructor cc : ctors)
 {
  System.out.println("my ctor is " + cc.toString());
 }
}
catch (Exception ex)
{
 ex.printStackTrace();
}

代码示例来源：origin: spring-projects/spring-loaded

Assert.assertEquals("public reflection.constructors.ClassForNewInstance(char,char)", c.toString());

代码示例来源：origin: stackoverflow.com

public static Object createObject(Constructor constructor,
   Object[] arguments) {

  System.out.println("Constructor: " + constructor.toString());
  Object object = null;

  try {
   object = constructor.newInstance(arguments);
   System.out.println("Object: " + object.toString());
   return object;
  } catch (InstantiationException e) {
   //handle it
  } catch (IllegalAccessException e) {
   //handle it
  } catch (IllegalArgumentException e) {
   //handle it
  } catch (InvocationTargetException e) {
   //handle it
  }
  return object;
 }
}

代码示例来源：origin: syncany/syncany

@Test
public void testMatchingConstructor() throws Exception {
  final Constructor<?> reference = X.class.getConstructor(A.class, A.class);
  assertNotNull(reference);
  for (Constructor<?> c : X.class.getConstructors()) {
    System.out.println(c.toString());
  }
  assertNotNull(ReflectionUtil.getMatchingConstructorForClass(X.class, A.class, A.class));
  assertEquals(reference, ReflectionUtil.getMatchingConstructorForClass(X.class, A.class, A.class));
  assertNotNull(ReflectionUtil.getMatchingConstructorForClass(X.class, A.class, C.class));
  assertNotNull(ReflectionUtil.getMatchingConstructorForClass(X.class, A.class));
  assertNotNull(ReflectionUtil.getMatchingConstructorForClass(X.class, B.class));
  assertNull(ReflectionUtil.getMatchingConstructorForClass(X.class, A.class, B.class)); // type erasure :(
  assertNull(ReflectionUtil.getMatchingConstructorForClass(X.class, B.class, B.class));
  assertNull(ReflectionUtil.getMatchingConstructorForClass(X.class, B.class, A.class));
  assertNull(ReflectionUtil.getMatchingConstructorForClass(X.class, A.class, B.class, B.class));
  assertNull(ReflectionUtil.getMatchingConstructorForClass(X.class));
}

代码示例来源：origin: resteasy/Resteasy

throw new RuntimeException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e);
throw new RuntimeException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e);
throw new RuntimeException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e.getCause());
String msg = Messages.MESSAGES.badArguments(constructor.toString() + "  (");
boolean first = false;
for (Object arg : args)

代码示例来源：origin: resteasy/Resteasy

throw new InternalServerErrorException(Messages.MESSAGES.failedProcessingArguments(constructor.toString()), e);
}).thenApply(args -> {
  try
   throw new InternalServerErrorException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e);
   throw new InternalServerErrorException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e);
   throw new ApplicationException(Messages.MESSAGES.failedToConstruct(constructor.toString()), e.getCause());
   String msg = Messages.MESSAGES.badArguments(constructor.toString() + "  (");
   boolean first = false;
   for (Object arg : args)

代码示例来源：origin: org.drools/drools-core

fail( "Unexpected constructor: " + c.toString() );

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