rtti.java~1~

来自「java2参考大全上的例子的源码和自己的理解.」· JAVA~1~ 代码 · 共 41 行

package getclass;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

// Demonstrate Run-Time Type Information.

class X {
  int a;
  float b;
}

class Y
    extends X {
  double c;
}

class RTTI {
  public static void main(String args[]) {
    X x = new X();
    Y y = new Y();
    Class clObj;

    clObj = x.getClass(); // get Class reference
    System.out.println("x is object of type: " +
                       clObj.getName());
    clObj = y.getClass(); // get Class reference
    System.out.println("y is object of type: " +
                       clObj.getName());
    clObj = clObj.getSuperclass();
    System.out.println("y's superclass is " +
                       clObj.getName());
  }
}