Example usage for javax.json JsonArray getBoolean

Introduction

In this page you can find the example usage for javax.json JsonArray getBoolean.

Prototype

boolean getBoolean(int index);

Source Link

Document

Returns the boolean value at the specified position.

Usage

From source file:com.buffalokiwi.aerodrome.jet.Utils.java

/**
 * Convert a json array to a list of booleans.
 * if arr is null, then an empty List<Boolean> instance is returned.
 * /*from  ww w  . j a  v  a  2s  .c om*/
 * This is more safe than JsonArray.getValuesAs() as this method
 * has built-in type checking and will throw a ClassCastException if 
 * the type is incorrect or null.
 * 
 * @param arr array
 * @return a list
 * @throws ClassCastException if any element in arr is not an boolean
 */
public static List<Boolean> jsonArrayToBooleanList(final JsonArray arr) {
    final List<Boolean> out = new ArrayList<>();
    if (arr == null)
        return out;

    for (int i = 0; i < arr.size(); i++) {
        final Boolean b = arr.getBoolean(i);
        if (b == null) {
            throw new ClassCastException(
                    "Element at position " + String.valueOf(i) + " is null - Boolean required");
        }

        out.add(b);

        out.add(arr.getBoolean(i));
    }

    return out;
}

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