mismatch.java

来自「程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件」· Java 代码 · 共 14 行

package examples.errors;
/** A class used to demonstrate how overloaded methods
  * must have the exact same return type
  */
public class MisMatch extends SuperClass {
   public MisMatch f() {
      return this;
   }
}
class SuperClass {
   public SuperClass f() {
      return this;
   }
}