Java Class toGenericString()用法及代碼示例

java.lang.Class類的toGenericString()方法用於將此類的實例與有關修飾符和類型參數的信息一起轉換為字符串表示形式。此方法返回形成的字符串表示形式。

用法:

public String toGenericString()

參數：此方法不接受任何參數。

返回值：此方法返回此對象的String表示形式。

下麵的程序演示了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()); 
    } 
}

輸出：

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()); 
    } 
}

輸出：

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

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

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