Java Utililty Methods Class New Instance

List of utility methods to do Class New Instance

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Description

The list of methods to do Class New Instance are organized into topic(s).

Method

ObjectnewInstance(Type type)
Creates a new instance of the type from his type name. 
try {
    return Class.forName(type.toString().substring(0, type.toString().indexOf('@'))).newInstance();
} catch (Throwable e) {
return null;
ObjectnewInstance(Type type)
Creates a new instance of the class represented by this Type object. 
Class<?> clazz = getClass(type);
if (clazz == null) {
    return null;
return clazz.newInstance();
ObjectnewInstance(Type type)
new Instance 
Class<?> clazz = getClass(type);
if (clazz == null) {
    return null;
return clazz.newInstance();
TnewInstanceByName(String className)
Get the instance of the given class. 
try {
    Class<?> loader = Class.forName(className);
    return (T) loader.newInstance();
} catch (Exception e) {
    throw new RuntimeException(e);
TnewInstanceByName(String className)
new Instance By Name 
Class<?> loader = Class.forName(className);
return (T) loader.newInstance();
TnewInstanceForClass(Class type)
new Instance For Class 
Object object = null;
if (type.isArray()) {
    Class componentClass = type.getComponentType();
    if (componentClass.isPrimitive()) {
        if (componentClass.equals(int.class))
            object = new int[0];
        else if (componentClass.equals(boolean.class))
            object = new boolean[0];
...
TnewInstanceForName(String fullClassName, Object... args)
Create a instance of a given class. 
try {
    return (T) newInstanceForName(Class.forName(fullClassName), args);
} catch (ClassNotFoundException exception) {
    return null;
ObjectnewInstanceFromClass(final Class clazz)
Get a new instance of a class using the default constructor. 
return clazz.newInstance();
TnewInstanceFromClassName(String className, Class classType)
Creates new instance of class 
@SuppressWarnings("unchecked")
final Class<T> clazz = (Class<T>) Class.forName(className).asSubclass(classType);
return clazz.newInstance();
TnewInstanceFromUnknownArgumentTypes(Class cls, Object[] args)
new Instance From Unknown Argument Types 
try {
    return cls.getDeclaredConstructor(getArgumentTypesFromArgumentList(args)).newInstance(args);
} catch (InstantiationException | InvocationTargetException | IllegalAccessException ie) {
    throw new RuntimeException(ie);
} catch (NoSuchMethodException nsme) {
    Constructor[] ctors = Arrays.stream(cls.getDeclaredConstructors())
            .filter(c -> c.getParameterTypes().length == args.length).toArray(Constructor[]::new);
    for (Constructor<?> ctor : ctors) {
...