Example usage for java.lang Double TYPE

Introduction

In this page you can find the example usage for java.lang Double TYPE.

Prototype

Class TYPE

To view the source code for java.lang Double TYPE.

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Document

The Class instance representing the primitive type double .

Usage

From source file:Main.java

public static void main(String[] args) {
    System.out.println(Double.TYPE);
}

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From source file:Main.java

public static void main(String[] args) {
    Class c = boolean.class;
    c = Boolean.TYPE;//ww w  . j a v  a2s. c  o m
    c = byte.class;
    c = Byte.TYPE;
    c = char.class;
    c = Character.TYPE;
    c = short.class;
    c = Short.TYPE;
    c = int.class;
    c = Integer.TYPE;
    c = long.class;
    c = Long.TYPE;
    c = float.class;
    c = Float.TYPE;
    c = double.class;
    c = Double.TYPE;
    c = void.class;
    c = Void.TYPE;
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Class<?> class1 = Class.forName("Rate");
    Object obj = class1.newInstance();
    for (Method m : class1.getMethods()) {
        if (m.getName().equals("myMethod")) {
            Class<?>[] parameterTypes = m.getParameterTypes();
            System.out.println(Arrays.toString(m.getParameterTypes()));
            Object methodArgs[] = new Object[parameterTypes.length];
            for (Class<?> parameterType : parameterTypes) {
                if (parameterType == Double.TYPE) {
                    double value = 0.5;
                    methodArgs[0] = value;
                }/*  ww w. j a v  a  2 s.c o m*/
            }
            Rate rate = (Rate) m.invoke(obj, methodArgs);
            System.out.println(rate.getValue());
        }
    }
}

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From source file:Main.java

public static Class<?> wrapperType(Class<?> paramClass) {
    if (paramClass == Integer.TYPE)
        return Integer.class;
    if (paramClass == Long.TYPE)
        return Long.class;
    if (paramClass == Boolean.TYPE)
        return Boolean.class;
    if (paramClass == Double.TYPE)
        return Double.class;
    if (paramClass == Float.TYPE)
        return Float.class;
    if (paramClass == Byte.TYPE)
        return Byte.class;
    if (paramClass == Short.TYPE)
        return Short.class;
    if (paramClass == Character.TYPE)
        return Character.class;
    throw new IllegalArgumentException("Class " + paramClass.getName() + " is not a primitive type");
}

---

From source file:Main.java

/**
 * Helper method used to get default value for wrappers used for primitive types
 * (0 for Integer etc)//  ww w  . j  a v a 2  s  .c  o m
 */
public static Object defaultValue(Class<?> cls) {
    if (cls == Integer.TYPE) {
        return Integer.valueOf(0);
    }
    if (cls == Long.TYPE) {
        return Long.valueOf(0L);
    }
    if (cls == Boolean.TYPE) {
        return Boolean.FALSE;
    }
    if (cls == Double.TYPE) {
        return Double.valueOf(0.0);
    }
    if (cls == Float.TYPE) {
        return Float.valueOf(0.0f);
    }
    if (cls == Byte.TYPE) {
        return Byte.valueOf((byte) 0);
    }
    if (cls == Short.TYPE) {
        return Short.valueOf((short) 0);
    }
    if (cls == Character.TYPE) {
        return '\0';
    }
    throw new IllegalArgumentException("Class " + cls.getName() + " is not a primitive type");
}

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From source file:Main.java

/**
 * Helper method for finding wrapper type for given primitive type (why isn't
 * there one in JDK?)/*from w w w  .  ja  v a  2s .c  o  m*/
 */
public static Class<?> wrapperType(Class<?> primitiveType) {
    if (primitiveType == Integer.TYPE) {
        return Integer.class;
    }
    if (primitiveType == Long.TYPE) {
        return Long.class;
    }
    if (primitiveType == Boolean.TYPE) {
        return Boolean.class;
    }
    if (primitiveType == Double.TYPE) {
        return Double.class;
    }
    if (primitiveType == Float.TYPE) {
        return Float.class;
    }
    if (primitiveType == Byte.TYPE) {
        return Byte.class;
    }
    if (primitiveType == Short.TYPE) {
        return Short.class;
    }
    if (primitiveType == Character.TYPE) {
        return Character.class;
    }
    throw new IllegalArgumentException("Class " + primitiveType.getName() + " is not a primitive type");
}

---

From source file:Main.java

private static Map<Class<?>, Class<?>> getWrapperTypes() {
    Map<Class<?>, Class<?>> ret = new HashMap<Class<?>, Class<?>>();
    ret.put(Boolean.TYPE, Boolean.class);
    ret.put(Character.TYPE, Character.class);
    ret.put(Byte.TYPE, Byte.class);
    ret.put(Short.TYPE, Short.class);
    ret.put(Integer.TYPE, Integer.class);
    ret.put(Long.TYPE, Long.class);
    ret.put(Float.TYPE, Float.class);
    ret.put(Double.TYPE, Double.class);
    ret.put(Void.TYPE, Void.class);
    return ret;//  w  w w . j  av  a2 s  . com
}

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From source file:Main.java

public static Class<?> findClass(String className) throws ClassNotFoundException {
    // [JACKSON-597]: support primitive types (and void)
    if (className.indexOf('.') < 0) {
        if ("int".equals(className))
            return Integer.TYPE;
        if ("long".equals(className))
            return Long.TYPE;
        if ("float".equals(className))
            return Float.TYPE;
        if ("double".equals(className))
            return Double.TYPE;
        if ("boolean".equals(className))
            return Boolean.TYPE;
        if ("byte".equals(className))
            return Byte.TYPE;
        if ("char".equals(className))
            return Character.TYPE;
        if ("short".equals(className))
            return Short.TYPE;
        if ("void".equals(className))
            return Void.TYPE;
    }/*from w ww.  j  av  a 2s.c om*/
    // Two-phase lookup: first using context ClassLoader; then default
    Throwable prob = null;
    ClassLoader loader = Thread.currentThread().getContextClassLoader();

    if (loader != null) {
        try {
            return Class.forName(className, true, loader);
        } catch (Exception e) {
            prob = getRootCause(e);
        }
    }
    try {
        return Class.forName(className);
    } catch (Exception e) {
        if (prob == null) {
            prob = getRootCause(e);
        }
    }
    if (prob instanceof RuntimeException) {
        throw (RuntimeException) prob;
    }
    throw new ClassNotFoundException(prob.getMessage(), prob);
}

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From source file:Main.java

public static void addBaseClassMappings() {
    mappings.put("byte", Byte.TYPE);
    mappings.put("short", Short.TYPE);
    mappings.put("int", Integer.TYPE);
    mappings.put("long", Long.TYPE);
    mappings.put("float", Float.TYPE);
    mappings.put("double", Double.TYPE);
    mappings.put("boolean", Boolean.TYPE);
    mappings.put("char", Character.TYPE);
    mappings.put("[byte", byte[].class);
    mappings.put("[short", short[].class);
    mappings.put("[int", int[].class);
    mappings.put("[long", long[].class);
    mappings.put("[float", float[].class);
    mappings.put("[double", double[].class);
    mappings.put("[boolean", boolean[].class);
    mappings.put("[char", char[].class);
    mappings.put(HashMap.class.getName(), HashMap.class);
}

---

From source file:Main.java

/**
 * This method parses the given value into the specified primitive or wrapper class.
 * @param clazz - primitive or wrapper class used to parse
 * @param value - string to be parsed//from ww  w .jav a 2s  .c  o m
 * @return object of type clazz parsed from the string
 * @author Trisan Bepler
 */
public static Object toObject(Class<?> clazz, String value) {
    if (Boolean.TYPE == clazz)
        return Boolean.parseBoolean(value);
    if (Byte.TYPE == clazz)
        return Byte.parseByte(value);
    if (Short.TYPE == clazz)
        return Short.parseShort(value);
    if (Integer.TYPE == clazz)
        return Integer.parseInt(value);
    if (Long.TYPE == clazz)
        return Long.parseLong(value);
    if (Float.TYPE == clazz)
        return Float.parseFloat(value);
    if (Double.TYPE == clazz)
        return Double.parseDouble(value);
    if (Boolean.class == clazz)
        return Boolean.parseBoolean(value);
    if (Byte.class == clazz)
        return Byte.parseByte(value);
    if (Short.class == clazz)
        return Short.parseShort(value);
    if (Integer.class == clazz)
        return Integer.parseInt(value);
    if (Long.class == clazz)
        return Long.parseLong(value);
    if (Float.class == clazz)
        return Float.parseFloat(value);
    if (Double.class == clazz)
        return Double.parseDouble(value);
    if (Character.class == clazz)
        return value.charAt(0);
    if (Character.TYPE == clazz)
        return value.charAt(0);
    return value;
}

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