Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2007 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.
 */

public class Main {
    /**
     * The largest power of two that can be represented as an {@code int}.
     */
    private static final int MAX_POWER_OF_TWO = 1 << (Integer.SIZE - 2);

    /**
     * Returns a capacity that is sufficient to keep the map from being resized as long as it grows no
     * larger than expectedSize and the load factor is >= its default (0.75).
     */
    private static int capacity(int expectedSize) {
        if (expectedSize < 3) {
            checkNonnegative(expectedSize, "expectedSize");
            return expectedSize + 1;
        }
        if (expectedSize < MAX_POWER_OF_TWO) {
            // This is the calculation used in JDK8 to resize when a putAll
            // happens; it seems to be the most conservative calculation we
            // can make.  0.75 is the default load factor.
            return (int) ((float) expectedSize / 0.75F + 1.0F);
        }
        return Integer.MAX_VALUE; // any large value
    }

    private static int checkNonnegative(int value, String name) {
        if (value < 0) {
            throw new IllegalArgumentException(name + " cannot be negative but was: " + value);
        }
        return value;
    }
}