// Path: src/main/java/org/fest/util/Preconditions.java
// public static @NotNull <T> T checkNotNull(@Nullable T reference) {
//   if (reference == null) {
//     throw new NullPointerException();
//   }
//   return reference;
// }


import org.jetbrains.annotations.NotNull;
import static org.fest.util.Preconditions.checkNotNull;
/*
 * Created on Feb 10, 2008
 *
 * 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.
 *
 * Copyright @2008-2013 the original author or authors.
 */
package org.fest.util;



/**
 * System properties.
 *
 * @author Yvonne Wang
 */
public final class SystemProperties {
  private static final String LINE_SEPARATOR = getlineSeparator();

  private SystemProperties() {
  }

  private static @NotNull String getlineSeparator() {
    try {
// Path: src/main/java/org/fest/util/Preconditions.java
// public static @NotNull <T> T checkNotNull(@Nullable T reference) {
//   if (reference == null) {
//     throw new NullPointerException();
//   }
//   return reference;
// }


// Path: src/main/java/org/fest/util/SystemProperties.java
import org.jetbrains.annotations.NotNull;
import static org.fest.util.Preconditions.checkNotNull;

/*
 * Created on Feb 10, 2008
 *
 * 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.
 *
 * Copyright @2008-2013 the original author or authors.
 */
package org.fest.util;



/**
 * System properties.
 *
 * @author Yvonne Wang
 */
public final class SystemProperties {
  private static final String LINE_SEPARATOR = getlineSeparator();

  private SystemProperties() {
  }

  private static @NotNull String getlineSeparator() {
    try {
      return checkNotNull(System.getProperty("line.separator"));