?原來(lái)對(duì)continue的理解停留在表面，粗略的以為就是
在執(zhí)行這條語(yǔ)句之后返回到迭代的頭部（自認(rèn)為是進(jìn)口處），沒(méi)想到還有巨大的細(xì)節(jié)問(wèn)題。

先舉個(gè)例子：

public ? class ?Test? ... {

???? /**?*/ /**
?????*? @param ?args
????? */
???? public ? static ? void ?main(String[]?args)? ... {
???????? // ?TODO?Auto-generated?method?stub
????????
???????? int ?k? = ? 0 ;
???????? do ... {
????????????k ++ ;
???????????? if (k < 10 ) ... {
????????????????System.out.println( " do-while: " + k);
???????????????? continue ;
????????????}
????????} while (k > 10 );
????????
???????? while (k < 10 ) ... {
????????????System.out.println( " while: " + k);
???????????? if (k < 10 ) ... {
????????????????k ++ ;
???????????????? continue ;
????????????}
????????}
????????
???????? for ( int ?i = 0 ;i < 10 ;i ++ ) ... {
????????????System.out.println( " for: " + i);
???????????? if (i < 10 ) ... {
???????????????? continue ;
????????????}
????????}

????}

}

返回結(jié)果：
do-while:1
while:1
while:2
while:3
while:4
while:5
while:6
while:7
while:8
while:9
for:0
for:1
for:2
for:3
for:4
for:5
for:6
for:7
for:8
for:9

可見(jiàn)：
do-while (exc):
??? ?? ?? ?? ?? ?? do -->...-->continue-(跳過(guò)部分代碼)->while(exc)-->...
while(exc):
??? ?? ?? ?? ?? ?? while(exc)-->...-->continue-(直接)->while(exc)-->...
for(a;b;c):
??? ?? ?? ?? ?? ?? a-->b-->...-->continue-(直接)->c-->b-->...

?

continue語(yǔ)句只能使用在循環(huán)語(yǔ)句內(nèi)部，功能是跳過(guò)該次循環(huán)，繼續(xù)執(zhí)行下一次循環(huán)結(jié)構(gòu)。在while和do-while語(yǔ)句中continue語(yǔ)句 跳轉(zhuǎn)到循環(huán)條件處開(kāi)始繼續(xù)執(zhí)行，而在for語(yǔ)句中continue語(yǔ)句跳轉(zhuǎn)到迭代語(yǔ)句處開(kāi)始繼續(xù)執(zhí)行。

for,while,do-while,continue（無(wú)標(biāo)號(hào)） 之間微妙的關(guān)系