public class Test {
static String o = ""; public static void main(String[] args) { z: o = o + 2;
for (int x = 3; x < 8; x++) {
if (x == 4)
break;
if (x == 6)
break z;
o = o + x;
}
System.out.println(o); }
} 为什么会报错?
static String o = ""; public static void main(String[] args) { z: o = o + 2;
for (int x = 3; x < 8; x++) {
if (x == 4)
break;
if (x == 6)
break z;
o = o + x;
}
System.out.println(o); }
} 为什么会报错?
if (x == 4)
break;
if (x == 6)
break z;
o = o + x;
}
break是跳出循环!!只有一层循环break和break z是一样的!break z是跳出标记的那层循环!没有C++中goto的功能!
label应该是循环的标记
意思就是中断标记的循环public class Test {
static String o = ""; public static void main(String[] args) {
for (int i = 0; i < 7; i++) {
z:for (int x = 3; x < 8; x++) {
if (x == 6)
break z;
o = o + x;
}
System.out.println(o);
}
}
}当x == 6时,中断z指示的内层循环