Example usage for java.lang Class getComponentType

Introduction

In this page you can find the example usage for java.lang Class getComponentType.

Prototype

public Class<?> getComponentType()

Source Link

Document

Returns the Class representing the component type of an array.

Usage

From source file:Main.java

public static String getType(Class<?> paramClass) {
    if (paramClass.isArray()) {
        return "[" + getDesc(paramClass.getComponentType());
    }/*from w  w  w.  j  a  v  a 2 s .  c om*/
    if (!paramClass.isPrimitive()) {
        return paramClass.getName().replaceAll("\\.", "/");
    }
    return getPrimitiveLetter(paramClass);
}

From source file:ShowClass.java

public static String typeName(Class t) {
    String brackets = "";
    while (t.isArray()) {
        brackets += "[]";
        t = t.getComponentType();
    }//from   w  w  w. ja va2  s. c o m
    String name = t.getName();
    int pos = name.lastIndexOf('.');
    if (pos != -1)
        name = name.substring(pos + 1);
    return name + brackets;
}

From source file:Main.java

public static String typename(Class t) {
    String brackets = "";
    while (t.isArray()) {
        brackets += "[]";
        t = t.getComponentType();
    }//from   w w  w  .  j  a  va  2s  . c o  m
    String name = t.getName();
    int pos = name.lastIndexOf('.');
    if (pos != -1)
        name = name.substring(pos + 1);
    return name + brackets;
}

From source file:Main.java

public static String canonicalName(Class clazz) {
    StringBuilder name = new StringBuilder();

    if (clazz.isArray()) {
        name.append(canonicalName(clazz.getComponentType()));
        name.append("[]");
    } else if (clazz.getDeclaringClass() == null) {
        name.append(clazz.getName());//from  w w  w  .  j  av a  2 s .  co m
    } else {
        name.append(canonicalName(clazz.getDeclaringClass()));
        name.append(".");
        name.append(clazz.getName().substring(clazz.getDeclaringClass().getName().length() + 1));
    }

    return name.toString();
}

From source file:ArrayExpander.java

public static Object merge(Object array1, Object array2) {
    if (array1 == null) {
        return null;
    }/*from ww w. j a va2s .co  m*/
    if (array2 == null) {
        return array1;
    }
    Class c = array1.getClass();
    if (c.isArray() && array2.getClass().isArray()) {
        Class cc = c.getComponentType();
        Object newArray = Array.newInstance(cc, Array.getLength(array1) + Array.getLength(array2));
        System.arraycopy(array1, 0, newArray, 0, Array.getLength(array1));
        System.arraycopy(array2, 0, newArray, Array.getLength(array1), Array.getLength(array2));
        return newArray;
    } else {
        throw new ClassCastException("need  array");
    }

}

From source file:Main.java

public static int getArrayDimension(Object array) {
    int dimension = 0;
    Class c = array.getClass();
    if (!c.isArray()) {
        throw new IllegalArgumentException("Object is not  an  array");
    }//  w  w  w . j a v a2 s .c om
    while (c.isArray()) {
        dimension++;
        c = c.getComponentType();
    }
    return dimension;
}

From source file:Main.java

/**
 * Creates a class identifier of form Labc/abc;, from a Class.
 *//*w  ww . ja v a2s. co  m*/
public static String ci(Class n) {
    if (n.isArray()) {
        n = n.getComponentType();
        if (n.isPrimitive()) {
            if (n == Byte.TYPE) {
                return "[B";
            } else if (n == Boolean.TYPE) {
                return "[Z";
            } else if (n == Short.TYPE) {
                return "[S";
            } else if (n == Character.TYPE) {
                return "[C";
            } else if (n == Integer.TYPE) {
                return "[I";
            } else if (n == Float.TYPE) {
                return "[F";
            } else if (n == Double.TYPE) {
                return "[D";
            } else if (n == Long.TYPE) {
                return "[J";
            } else {
                throw new RuntimeException("Unrecognized type in compiler: " + n.getName());
            }
        } else {
            return "[" + ci(n);
        }
    } else {
        if (n.isPrimitive()) {
            if (n == Byte.TYPE) {
                return "B";
            } else if (n == Boolean.TYPE) {
                return "Z";
            } else if (n == Short.TYPE) {
                return "S";
            } else if (n == Character.TYPE) {
                return "C";
            } else if (n == Integer.TYPE) {
                return "I";
            } else if (n == Float.TYPE) {
                return "F";
            } else if (n == Double.TYPE) {
                return "D";
            } else if (n == Long.TYPE) {
                return "J";
            } else if (n == Void.TYPE) {
                return "V";
            } else {
                throw new RuntimeException("Unrecognized type in compiler: " + n.getName());
            }
        } else {
            return "L" + p(n) + ";";
        }
    }
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static <T, U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType) {
    T[] copy = ((Object) newType == (Object) Object[].class) ? (T[]) new Object[newLength]
            : (T[]) Array.newInstance(newType.getComponentType(), newLength);
    System.arraycopy(original, 0, copy, 0, Math.min(original.length, newLength));
    return copy;/*from w w w . jav a2  s . c o m*/
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static final <T, U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType) {
    T[] copy = ((Object) newType == (Object) Object[].class) ? (T[]) new Object[newLength]
            : (T[]) Array.newInstance(newType.getComponentType(), newLength);
    System.arraycopy(original, 0, copy, 0, Math.min(original.length, newLength));
    return copy;//  www  . j  a va 2  s.  co  m
}

From source file:Main.java

protected static <T, U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType) {
    T[] copy = ((Object) newType == (Object) Object[].class) ? (T[]) new Object[newLength]
            : (T[]) Array.newInstance(newType.getComponentType(), newLength);
    System.arraycopy(original, 0, copy, 0, Math.min(original.length, newLength));
    return copy;/*from ww  w  .ja  v a 2s. c  om*/
}