Java Utililty Methods Object Type Case

List of utility methods to do Object Type Case

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Description

The list of methods to do Object Type Case are organized into topic(s).

Method

longcastInttoLong(int x)
cast Intto Long 
return x & 0x00000000ffffffffL;
TcastNode(Class jsonNode, Class classz)
cast Node 
if (classz.isAssignableFrom(jsonNode)) {
    return (T) classz;
throw new ClassCastException("can not cast " + classz + " to " + jsonNode);
T[]castNonNullArray( T [] arr)
cast Non Null Array 
assert arr != null : "Misuse of castNonNullArray: called with a null array argument";
for (int i = 0; i < arr.length; ++i) {
    assert arr[i] != null : "Misuse of castNonNull: called with a null array element";
    checkIfArray(arr[i]);
return ( T[]) arr;
RcastNullableParameterTo(String parameterName, T value, Class requiredType)
cast Nullable Parameter To 
final R result;
if (value != null) {
    if (!requiredType.isInstance(value)) {
        throw new IllegalArgumentException(
                parameterName + " is not of type " + requiredType.getName() + ".");
    } else {
        result = requiredType.cast(value);
} else {
    result = null;
return result;
TcastNumber(Number num, Class clazz)
Casts provided number value to desired number type. 
Number cNum = 0;
if (clazz.isAssignableFrom(Long.class)) {
    cNum = num.longValue();
} else if (clazz.isAssignableFrom(Integer.class)) {
    cNum = num.intValue();
} else if (clazz.isAssignableFrom(Byte.class)) {
    cNum = num.byteValue();
} else if (clazz.isAssignableFrom(Float.class)) {
...
TcastObject(Class clazz, Object object)
cast Object 
return clazz.cast(object);
booleancastObject(Object fromObj, Class toClass)
castObject returns boolean value indicating whether the value need to be cast 
if (toClass.equals(fromObj.getClass())) {
    return false;
} else if (toClass.isPrimitive()) {
    if (toClass.equals(long.class) && fromObj.getClass().equals(Long.class)) {
        return false;
    } else if (toClass.equals(int.class) && fromObj.getClass().equals(Integer.class)) {
        return false;
    } else if (toClass.equals(double.class) && fromObj.getClass().equals(Double.class)) {
...
TcastObject(Object ob)
Reads an object from an input and converts it to the appropriate type. 
return (T) ob;
TcastOrDefault(Class type, Object value, T defaultValue, boolean allowNull)
Casts a value to another type, returning a default value if the cast is not possible or if the value is null and null values are not allowed. 
if (value == null)
    return allowNull ? null : defaultValue;
if (!type.isAssignableFrom(value.getClass())) {
    return defaultValue;
return (T) value;
TcastOrDefault(Object o, Class type, T def)
cast Or Default 
return o == null || !type.isInstance(o) ? def : (T) o;