“class” object的取得途径

java允许我们从多种管道为一个class生成对应的class object。下图是一份整理。

class object 诞生管道

示例

运用getclass()

注：每个class 都有此函数

string str = "abc";

class c1 = str.getclass();

运用

class.getsuperclass()

button b = new button();

class c1 = b.getclass();

class c2 = c1.getsuperclass();

运用static method

class.forname()

（最常被使用）

class c1 = class.forname ("java.lang.string");

class c2 = class.forname ("java.awt.button");

class c3 = class.forname ("java.util.linkedlist$entry");

class c4 = class.forname ("i");

运用

.class 语法

class c1 = string.class;

class c2 = java.awt.button.class;

class c3 = main.innerclass.class;

class c4 = int.class;

class c5 = int[].class;

运用

primitive wrapper classes

的type 语法

class c1 = boolean.type;

class c2 = byte.type;

class c3 = character.type;

class c4 = short.type;

class c5 = integer.type;

class c6 = long.type;

class c7 = float.type;

class c8 = double.type;

class c9 = void.type;