Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

public class Main {
    public static final long[] EMPTY_LONG_ARRAY = new long[0];
    public static final int[] EMPTY_INT_ARRAY = new int[0];
    public static final double[] EMPTY_DOUBLE_ARRAY = new double[0];
    public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0];

    public static long[] toPrimitive(final Long[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_LONG_ARRAY;
        }
        final long[] result = new long[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].longValue();
        }
        return result;
    }

    public static long[] toPrimitive(final Long[] array, final long valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_LONG_ARRAY;
        }
        final long[] result = new long[array.length];
        for (int i = 0; i < array.length; i++) {
            final Long b = array[i];
            result[i] = (b == null ? valueForNull : b.longValue());
        }
        return result;
    }

    public static int[] toPrimitive(final Integer[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_INT_ARRAY;
        }
        final int[] result = new int[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].intValue();
        }
        return result;
    }

    public static int[] toPrimitive(final Integer[] array, final int valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_INT_ARRAY;
        }
        final int[] result = new int[array.length];
        for (int i = 0; i < array.length; i++) {
            final Integer b = array[i];
            result[i] = (b == null ? valueForNull : b.intValue());
        }
        return result;
    }

    public static double[] toPrimitive(final Double[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_DOUBLE_ARRAY;
        }
        final double[] result = new double[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].doubleValue();
        }
        return result;
    }

    public static double[] toPrimitive(final Double[] array, final double valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_DOUBLE_ARRAY;
        }
        final double[] result = new double[array.length];
        for (int i = 0; i < array.length; i++) {
            final Double b = array[i];
            result[i] = (b == null ? valueForNull : b.doubleValue());
        }
        return result;
    }

    public static boolean[] toPrimitive(final Boolean[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BOOLEAN_ARRAY;
        }
        final boolean[] result = new boolean[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].booleanValue();
        }
        return result;
    }

    public static boolean[] toPrimitive(final Boolean[] array, final boolean valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BOOLEAN_ARRAY;
        }
        final boolean[] result = new boolean[array.length];
        for (int i = 0; i < array.length; i++) {
            final Boolean b = array[i];
            result[i] = (b == null ? valueForNull : b.booleanValue());
        }
        return result;
    }
}