Java Method getGenericExceptionTypes() Method

The getGenericExceptionTypes() method of Constructor class returns an array of Type objects representing the exceptions declared to be thrown by this executable object. An array of length 0 is returned if the underlying executable declares no exceptions in its throws clause.

Syntax

Parameter

No parameter is passed.

Returns

an array of Types that represent the exception types thrown by the underlying executable

Throws

GenericSignatureFormatError

TypeNotPresentException

MalformedParameterizedTypeException

Example 1

//import statement
import java.lang.reflect.Constructor;
import java.lang.reflect.Type;
public class ReflectMethodgetGenericExceptionTypesExample1 {
   public static void main(String[] args) {
      Constructor[] cnstrct = DemoRClass11.class.getConstructors();
      Type[] exptn = cnstrct[0].getGenericExceptionTypes();
      for (int i = 0; i < exptn.length; i++) {
         System.out.println(exptn[i]);
      }
   }
}
class DemoRClass11 {
   private String Field;
   public DemoRClass11() throws ArrayIndexOutOfBoundsException {
   }
   public DemoRClass11(String sampleField){
      this.Field = Field;
   }

   public String getField() {
      return Field;
   }

   public void setField(String sampleField) {
      this.Field = Field; 
   } 
}

Test it Now

Output:

class java.lang.ArrayIndexOutOfBoundsException

Example 2

//import statements
  import java.io.IOException;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.Arrays;

public class ReflectMethodgetGenericExceptionTypesExample2  {
    private static class Processor {
        private void init1() {}
        private void process1() throws IOException {}
    }

    public static void main(String... args) throws NoSuchMethodException {
        Method mthd = Processor.class.getDeclaredMethod("init1");
        Type[] tp = mthd.getGenericExceptionTypes();
        System.out.println(Arrays.toString(tp));

        Method mthd2 = Processor.class.getDeclaredMethod("process1");
        Type[] tp2 = mthd2.getGenericExceptionTypes();
        System.out.println(Arrays.toString(tp2));
    }
}

Test it Now

Output: