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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. MyClass mc = new MyClass();
  13. mc.newClass();
  14. }
  15. }
  16.  
  17. class MyClass {
  18. public Class<MyInnerClass> oneclass;
  19.  
  20. public MyClass(){
  21. System.out.print("MyClass\n");
  22. this.oneclass = MyInnerClass.class;
  23. }
  24. public void newClass(){
  25. try {
  26. MyInnerClass mic = this.oneclass.newInstance();
  27. }catch(Exception e){
  28. System.out.print("Exception: " + e + "\n");
  29. }
  30. }
  31.  
  32. private class MyInnerClass {
  33. MyInnerClass(){
  34. System.out.print("MyInnerClass");
  35. }
  36. }
  37. }
Success #stdin #stdout 0.09s 27988KB
stdin
Standard input is empty
stdout
MyClass
Exception: java.lang.InstantiationException: MyClass$MyInnerClass