Java Object Type Case castToPrimitive(Object value, String targetType)

Description

cast To Primitive

License

Open Source License

Declaration

public static Object castToPrimitive(Object value, String targetType) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    public static Object castToPrimitive(Object value, String targetType) {
        // TODO: add tests for this + confirm dalvik works this way

        // Type information is not always available beyond "const" because Dalvik handles multiple types like integers.
        // This is to make easier the casting of that number to the correct type.
        if (value instanceof Number) {
            Number castValue = (Number) value;
            if ("B".equals(targetType) || "Ljava/lang/Byte;".equals(targetType)) {
                return castValue.byteValue();
            } else if ("D".equals(targetType) || "Ljava/lang/Double;".equals(targetType)) {
                return castValue.doubleValue();
            } else if ("F".equals(targetType) || "Ljava/lang/Float;".equals(targetType)) {
                return castValue.floatValue();
            } else if ("I".equals(targetType) || "Ljava/lang/Integer;".equals(targetType)) {
                return castValue.intValue();
            } else if ("L".equals(targetType) || "Ljava/lang/Long;".equals(targetType)) {
                return castValue.longValue();
            } else if ("S".equals(targetType) || "Ljava/lang/Short;".equals(targetType)) {
                return castValue.shortValue();
            } else if ("C".equals(targetType) || "Ljava/lang/Character;".equals(targetType)) {
                return (char) castValue.intValue();
            } else if ("Z".equals(targetType) || "Ljava/lang/Boolean;".equals(targetType)) {
                return castValue.intValue() != 0 ? true : false;
            }/*from   w  w w .java  2 s . com*/
        } else if (value instanceof Boolean) {
            Boolean castValue = (Boolean) value;
            if ("Z".equals(targetType) || "Ljava/lang/Boolean;".equals(targetType)) {
                return castValue;
            } else if ("B".equals(targetType) || "Ljava/lang/Byte;".equals(targetType)) {
                return (byte) (castValue ? 1 : 0);
            } else if ("I".equals(targetType) || "Ljava/lang/Integer;".equals(targetType)) {
                return castValue ? 1 : 0;
            } else if ("S".equals(targetType) || "Ljava/lang/Short;".equals(targetType)) {
                return (short) (castValue ? 1 : 0);
            }
        } else if (value instanceof Character) {
            Character castValue = (Character) value;
            Integer intValue = (int) castValue;
            if ("Z".equals(targetType) || "Ljava/lang/Boolean;".equals(targetType)) {
                return (int) castValue != 0 ? true : false;
            } else if ("B".equals(targetType) || "Ljava/lang/Byte;".equals(targetType)) {
                return intValue.byteValue();
            } else if ("I".equals(targetType) || "Ljava/lang/Integer;".equals(targetType)) {
                return intValue;
            } else if ("S".equals(targetType) || "Ljava/lang/Short;".equals(targetType)) {
                return intValue.shortValue();
            }
        }

        return value;
    }
}

Related

1. caststring1(String tmpq)
2. castTo(Object o, Class cls)
3. castToArray(Object object)
4. castToClass_strict(Number valueIn, Class toClassIn)
5. castToObject(Object value)
6. castTotal(boolean isDoubleQuote, String target)
7. castToTypeOrNull(Object object, Class clazz)
8. castUnderLine(String origin)
9. castValue(String value, Class clazz)