java 無限遞迴的構造器執行個體詳解

在一些情況下，程式可導致構造器進行無限遞迴，如：  public class ConstrucorRecursion {  {   ConstrucorRecursion rc = new ConstrucorRecursion();  }  public ConstrucorRecursion()   {     System.out.println("程式執行無參數的構造器");   }  public static void main(String[] args)  {   ConstrucorRecursion rc = new ConstrucorRecursion();  } }

public class InstanceTest{  private String name;  //持有當前類的執行個體  private InstanceTest instance;  //定義一個無參數的構造器  public InstanceTest()  {   }  //定義有參數的構造器  public InstanceTest(String name)  {    //調用無參數的構造器初始化intance執行個體    instance = new InstanceTest();    instance.name = name;  }  //重寫toString()方法  public String toString()  {   return "InstanceTest[instance="+ instance + "]";   }  public static void main(String[] args)   {   InstanceTest in = new InstanceTest();   InstanceTest in2 = new InstanceTest("測試name");   //讓兩個對象相互引用   in.instance = in2;   in2.instance = in;   System.out.println(in);   System.out.println(in2);  }}