赋值运算为何是这样的
three=one+two;
System.out.println(three);
three+=one;
System.out.println(three);
three-=one;
System.out.println(three);
three*=one;
System.out.println(three);
three/=one;
System.out.println(three);
three%=one;
System.out.println(three);
谁能解释下为何代码是这样的,这个代码看不懂为何three=one+two;却输出System.out.println(three);的结果是30而不是0