读《编写高质量代码改善java程序的151个建议》有感

/**    建议7
     * 这波陷阱列害了
     * @param args
     */
public class Demo {

    public static void main(String[] args) {
        int count = 0;
        int count2 = 0;
        int count3 = 0;
        for (int i = 0; i<10 ; i++) {
            count = count++;//自增的陷阱 无效
            count2++;//有效
            count3 = ++count3;//有效
            System.out.println("自增的陷阱 count="+count+" count2="+count2+" count3="+count3);
        }
    }
    
}

/*

自增的陷阱 count=0 count2=1 count3=1
自增的陷阱 count=0 count2=2 count3=2
自增的陷阱 count=0 count2=3 count3=3
自增的陷阱 count=0 count2=4 count3=4
自增的陷阱 count=0 count2=5 count3=5
自增的陷阱 count=0 count2=6 count3=6
自增的陷阱 count=0 count2=7 count3=7
自增的陷阱 count=0 count2=8 count3=8
自增的陷阱 count=0 count2=9 count3=9
自增的陷阱 count=0 count2=10 count3=10

*/