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Java example source code file (FuturesGetCheckedInputs.java)

This example Java source code file (FuturesGetCheckedInputs.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

error, exception, exceptionwithbadconstructor, exceptionwithgoodandbadconstructor, exceptionwithmanyconstructors, exceptionwithoutthrowableconstructor, exceptionwithsomeprivateconstructors, future, otherthrowable, runtimeexception, string, threading, threads, throwable, twoargconstructorexception, twoargconstructorruntimeexception

The FuturesGetCheckedInputs.java Java example source code

/*
 * Copyright (C) 2008 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.util.concurrent.Futures.immediateFailedFuture;

import java.util.concurrent.Future;

/**
 * Classes and futures used in {@link FuturesGetCheckedTest} and {@link FuturesGetUncheckedTest}.
 */
final class FuturesGetCheckedInputs {
  static final Exception CHECKED_EXCEPTION = new Exception("mymessage");
  static final Future<String> FAILED_FUTURE_CHECKED_EXCEPTION =
      immediateFailedFuture(CHECKED_EXCEPTION);
  static final RuntimeException UNCHECKED_EXCEPTION = new RuntimeException("mymessage");
  static final Future<String> FAILED_FUTURE_UNCHECKED_EXCEPTION =
      immediateFailedFuture(UNCHECKED_EXCEPTION);
  static final RuntimeException RUNTIME_EXCEPTION = new RuntimeException();
  static final OtherThrowable OTHER_THROWABLE = new OtherThrowable();
  static final Future<String> FAILED_FUTURE_OTHER_THROWABLE =
      immediateFailedFuture(OTHER_THROWABLE);
  static final Error ERROR = new Error("mymessage");
  static final Future<String> FAILED_FUTURE_ERROR = immediateFailedFuture(ERROR);
  static final Future<String> RUNTIME_EXCEPTION_FUTURE =
      UncheckedThrowingFuture.throwingRuntimeException(RUNTIME_EXCEPTION);
  static final Future<String> ERROR_FUTURE = UncheckedThrowingFuture.throwingError(ERROR);

  public static final class TwoArgConstructorException extends Exception {
    public TwoArgConstructorException(String message, Throwable cause) {
      super(message, cause);
    }
  }

  public static final class TwoArgConstructorRuntimeException extends RuntimeException {
    public TwoArgConstructorRuntimeException(String message, Throwable cause) {
      super(message, cause);
    }
  }

  public static final class ExceptionWithPrivateConstructor extends Exception {
    private ExceptionWithPrivateConstructor(String message, Throwable cause) {
      super(message, cause);
    }
  }

  @SuppressWarnings("unused") // we're testing that they're not used
  public static final class ExceptionWithSomePrivateConstructors extends Exception {
    private ExceptionWithSomePrivateConstructors(String a) {}

    private ExceptionWithSomePrivateConstructors(String a, String b) {}

    public ExceptionWithSomePrivateConstructors(String a, String b, String c) {}

    private ExceptionWithSomePrivateConstructors(String a, String b, String c, String d) {}

    private ExceptionWithSomePrivateConstructors(
        String a, String b, String c, String d, String e) {}
  }

  public static final class ExceptionWithManyConstructors extends Exception {
    boolean usedExpectedConstructor;

    public ExceptionWithManyConstructors() {}

    public ExceptionWithManyConstructors(Integer i) {}

    public ExceptionWithManyConstructors(Throwable a) {}

    public ExceptionWithManyConstructors(Throwable a, Throwable b) {}

    public ExceptionWithManyConstructors(String s, Throwable b) {
      usedExpectedConstructor = true;
    }

    public ExceptionWithManyConstructors(Throwable a, Throwable b, Throwable c) {}

    public ExceptionWithManyConstructors(Throwable a, Throwable b, Throwable c, Throwable d) {}

    public ExceptionWithManyConstructors(
        Throwable a, Throwable b, Throwable c, Throwable d, Throwable e) {}

    public ExceptionWithManyConstructors(
        Throwable a, Throwable b, Throwable c, Throwable d, Throwable e, String s, Integer i) {}
  }

  public static final class ExceptionWithoutThrowableConstructor extends Exception {
    public ExceptionWithoutThrowableConstructor(String s) {
      super(s);
    }
  }

  public static final class ExceptionWithWrongTypesConstructor extends Exception {
    public ExceptionWithWrongTypesConstructor(Integer i, String s) {
      super(s);
    }
  }

  static final class ExceptionWithGoodAndBadConstructor extends Exception {
    public ExceptionWithGoodAndBadConstructor(String message, Throwable cause) {
      throw new RuntimeException("bad constructor");
    }

    public ExceptionWithGoodAndBadConstructor(Throwable cause) {
      super(cause);
    }
  }

  static final class ExceptionWithBadConstructor extends Exception {
    public ExceptionWithBadConstructor(String message, Throwable cause) {
      throw new RuntimeException("bad constructor");
    }
  }

  static final class OtherThrowable extends Throwable {}

  private FuturesGetCheckedInputs() {}
}

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