e116. getting a constructor of a class object.txt

来自「这里面包含了一百多个JAVA源文件」· 文本 代码 · 共 17 行

There are two ways of obtaining a Constructor object from a Class object. 
    // By obtaining a list of all Constructors object.
    Constructor[] cons = cls.getDeclaredConstructors();
    for (int i=0; i<cons.length; i++) {
        Class[] paramTypes = cons[i].getParameterTypes();
        process(cons[i]);
    }
    
    // By obtaining a particular Constructor object.
    // This example retrieves java.awt.Point(int, int).
    try {
        Constructor con = java.awt.Point.class.getConstructor(new Class[]{int.class, int.class});
        process(con);
    } catch (NoSuchMethodException e) {
    }