Question

请参阅下面的代码并告诉我什么是不同的。

public class c1
{
  //....
}

Class c2 = obj.getClass();

Object o1 = new c1();
Object o2 = new c2();  //  <<-----  here

错误的结束线???

如何创建c2 ????

的对象

编辑：

int[] s1 = new int[]{4,5,6};
char[] s2 = new char[]{'a'.'b'};

Integer[] new = convertPrimitiveArrayToObject(new Object[]{s1});
Character[] new = convertPrimitiveArrayToObject(new Object[]{s2});


public static <T> T[] convertPrimitiveArrayToObject(Object[] primitive)
    {
           Object x =  primitive[0];
            Class type = x.getClass().getComponentType();  // => int OR char
            type[] x2 = (type[]) x;         // I need to convert array to (int/char/...)

      //......
   }

Answer 1

您需要使用反射，首先阅读Java反射

这会对你有所帮助 Creating New Class Instances

创建对象

Object object = null;
  try {
      Class clazz = Class.forName("yor fully qualified class name");
      object = clazz.newInstance();
  } catch (InstantiationException e) {
      System.out.println(e);
  } catch (IllegalAccessException e) {
      System.out.println(e);
  } catch (ClassNotFoundException e) {
      System.out.println(e);
  }

Answer 2

Object o2 = (C1) c2.newInstance();

Java - 声明类和类对象（类与类）之间的不同

2 个答案: