Java中的 toGenericString() 方法和示例

Java.lang.Class 类的toGenericString()方法用于将该类的实例与有关修饰符和类型参数的信息一起转换为字符串表示形式。此方法返回形成的字符串表示。

句法：

public String toGenericString()

参数：此方法不接受任何参数。

返回值：此方法返回此对象的字符串表示形式。

下面的程序演示了 toGenericString() 方法。

示例 1：

// Java program to demonstrate toGenericString() method
  
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        // returns the Class object for the class
        // with the specified name
        Class c1 = Class.forName("java.lang.String");
  
        System.out.print("Class represented by c1: ");
  
        // toGenericString method on c1
        System.out.println(c1.toGenericString());
    }
}

输出：

Class represented by c1: public final class java.lang.String

示例 2：

// Java program to demonstrate toGenericString() method
  
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        // returns the Class object for the class
        // with the specified name
        Class c2 = int.class;
        Class c3 = void.class;
  
        System.out.print("Class represented by c2: ");
  
        // toGenericString method on c2
        System.out.println(c2.toGenericString());
  
        System.out.print("Class represented by c3: ");
  
        // toGenericString method on c3
        System.out.println(c3.toGenericString());
    }
}

输出：

Class represented by c2: int
Class represented by c3: void

参考： https://docs.oracle.com/javase/9/docs/api/ Java/lang/Class.html#toGenericString–