JAVA 反射机制 获得 private 变量

public class Triangle {// 定义三角形的三边protected long lborderA = 0;protected long lborderB = 0;protected long lborderC = 0;}

获得 protected 三个变量  （private 也一样）

           Triangle  triangle = new Triangle(2, 2, 3);try {Field title1 = triangle.getClass().getDeclaredField("lborderA");title1.setAccessible(true);Field title2 = triangle.getClass().getDeclaredField("lborderB");title2.setAccessible(true);Field title3 = triangle.getClass().getDeclaredField("lborderC");title3.setAccessible(true);long lborderA = (Long) title1.get(triangle);long lborderB = (Long) title2.get(triangle);long lborderC = (Long) title3.get(triangle);}