Example usage for java.lang Class getInterfaces

Introduction

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

Prototype

public Class<?>[] getInterfaces()

Source Link

Document

Returns the interfaces directly implemented by the class or interface represented by this object.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Class cls = int.class;
    Class[] intfs = cls.getInterfaces(); // []

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Class cls = java.util.List.class;
    Class[] intfs = cls.getInterfaces(); // java.util.Collection

}

From source file:Main.java

public static void main(String[] args) {
    Class cls = Thread.class;
    System.out.println("Class = " + cls.getName());

    Class[] c = cls.getClasses();
    System.out.println("Classes = " + Arrays.asList(c));

    // returns an array of interfaces
    Class[] i = cls.getInterfaces();
    System.out.println("Interfaces = " + Arrays.asList(i));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File f = new File("c:/mysql-connector-java-5.1.18-bin.jar");
    URLClassLoader urlCl = new URLClassLoader(new URL[] { f.toURL() }, System.class.getClassLoader());

    Class mySqlDriver = urlCl.loadClass("com.mysql.jdbc.Driver");
    System.out.println(mySqlDriver.newInstance());
    System.out.println("Is this interface? = " + mySqlDriver.isInterface());

    Class interfaces[] = mySqlDriver.getInterfaces();
    int i = 1;//from   ww  w  .  j  av a 2s . c o m
    for (Class _interface : interfaces) {
        System.out.println("Implemented Interface Name " + (i++) + " = " + _interface.getName());
    }

    Constructor constructors[] = mySqlDriver.getConstructors();
    for (Constructor constructor : constructors) {
        System.out.println("Constructor Name = " + constructor.getName());
        System.out.println("Is Constructor Accessible? = " + constructor.isAccessible());
    }
}

From source file:HasBatteries.java

public static void main(String[] args) {
    Class c = null;
    try {/*from ww w .ja v  a  2s  .co  m*/
        c = Class.forName("FancyToy");
    } catch (ClassNotFoundException e) {
        System.out.println("Can't find FancyToy");
        System.exit(1);
    }
    printInfo(c);
    Class[] faces = c.getInterfaces();
    for (int i = 0; i < faces.length; i++)
        printInfo(faces[i]);
    Class cy = c.getSuperclass();
    Object o = null;
    try {
        // Requires default constructor:
        o = cy.newInstance(); // (*1*)
    } catch (InstantiationException e) {
        System.out.println("Cannot instantiate");
        System.exit(1);
    } catch (IllegalAccessException e) {
        System.out.println("Cannot access");
        System.exit(1);
    }
    printInfo(o.getClass());

}

From source file:ShowClass.java

public static void main(String[] args) throws ClassNotFoundException {
    Class aClass = Class.forName("javax.swing.JComponent");
    if (aClass.isInterface()) {
        System.out.print(Modifier.toString(aClass.getModifiers()) + " " + typeName(aClass));
    } else if (aClass.getSuperclass() != null) {
        System.out.print(Modifier.toString(aClass.getModifiers()) + " class " + typeName(aClass) + " extends "
                + typeName(aClass.getSuperclass()));
    } else {//from w  w w  . java2 s .  c o  m
        System.out.print(Modifier.toString(aClass.getModifiers()) + " class " + typeName(aClass));
    }

    Class[] interfaces = aClass.getInterfaces();
    if ((interfaces != null) && (interfaces.length > 0)) {
        if (aClass.isInterface())
            System.out.print(" extends ");
        else
            System.out.print(" implements ");
        for (int i = 0; i < interfaces.length; i++) {
            if (i > 0)
                System.out.print(", ");
            System.out.print(typeName(interfaces[i]));
        }
    }

    System.out.println(" {");

    Constructor[] constructors = aClass.getDeclaredConstructors();
    for (int i = 0; i < constructors.length; i++)
        printMethodOrConstructor(constructors[i]);

    Field[] fields = aClass.getDeclaredFields();
    for (int i = 0; i < fields.length; i++)
        printField(fields[i]);

    Method[] methods = aClass.getDeclaredMethods();
    for (int i = 0; i < methods.length; i++)
        printMethodOrConstructor(methods[i]);

    System.out.println("}");
}

From source file:SampleInterface.java

static void printInterfaceNames(Object o) {
    Class c = o.getClass();
    Class[] theInterfaces = c.getInterfaces();
    for (int i = 0; i < theInterfaces.length; i++) {
        String interfaceName = theInterfaces[i].getName();
        System.out.println(interfaceName);
    }/*  w w  w. j  a  v  a  2s . c  o m*/
}

From source file:Main.java

public static boolean isImplementInterface(Class<?> interfaceClass, Class<?> implementClass) {
    for (Class<?> subClass : implementClass.getInterfaces()) {
        if (subClass.equals(interfaceClass)) {
            return true;
        }//  w w  w.  ja v  a2  s . c o m
    }
    return false;
}

From source file:MyClass.java

public static String getClassInterfaces(Class c) {
    Class[] interfaces = c.getInterfaces();
    String interfacesList = null;
    if (interfaces.length > 0) {
        String[] interfaceNames = new String[interfaces.length];
        for (int i = 0; i < interfaces.length; i++) {
            interfaceNames[i] = interfaces[i].getSimpleName();
        }/*  w  w  w.j  a va 2  s  . c  o m*/
        interfacesList = String.join(", ", interfaceNames);
    }
    return interfacesList;
}

From source file:Main.java

private static void exploreSuperInterfaces(Class<?> intf, Set<Class<?>> traitInterfaces) {
    for (Class<?> sup : intf.getInterfaces()) {
        traitInterfaces.add(sup);/*www. j  av a 2 s  .  c  o m*/
        exploreSuperInterfaces(sup, traitInterfaces);
    }
}