命令.. 打破; 在 Java 中怎么办。？
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The Command.. break; in Java what if.?
提问by WM.
What if we have an if statement inside a for loop, would it stop the loop or the if condition...
如果我们在 for 循环中有一个 if 语句，它会停止循环还是 if 条件...
Example:
例子：
for (int i = 0; i < array.length; i++) {
if (condition) {
statement;
break;
}
}
采纳答案by brain
The breakstatement has no effect on if statements. It only works on switch, for, whileand doloops. So in your example the break would terminate the forloop.
该break语句对 if 语句没有影响。它仅适用于switch，for，while和do循环。因此，在您的示例中，中断将终止for循环。
See this sectionand this sectionof the Java tutorial.
回答by Cameron Skinner
It will stop the loop.
它将停止循环。
回答by Nico Huysamen
The break command inside the IF statement will exit the FOR loop.
IF 语句中的 break 命令将退出 FOR 循环。
回答by Buhake Sindi
Once the condition is met and the statement has successfully been executed (let's assuming no exception is thrown), then the breakexits from the loop.
一旦满足条件并且语句已成功执行（假设没有抛出异常），则break退出循环。
回答by Jeen Broekstra
a breakstatement (and its companion, 'continue', as well) works on a surrounding loop. An if-statement is not a loop. So to answer your question: the breakin your code example will jump out of the for-loop.
一个break语句（以及它的伴随，'continue'，以及）适用于周围的循环。-if语句不是循环。所以回答你的问题：break你的代码示例中的 将跳出for-loop。
回答by semicontinuity
You can break out of just 'if' statement also, if you wish, it may make sense in such a scenario:
如果您愿意，您也可以脱离“if”语句，在这种情况下它可能是有意义的：
for(int i = 0; i<array.length; i++)
{
CHECK:
if(condition)
{
statement;
if (another_condition) break CHECK;
another_statement;
if (yet_another_condition) break CHECK;
another_statement;
}
}
you can also break out of labeled {} statement:
您还可以跳出带标签的 {} 语句：
for(int i = 0; i<array.length; i++)
{
CHECK:
{
statement;
if (another_condition) break CHECK;
another_statement;
if (yet_another_condition) break CHECK;
another_statement;
}
}
回答by Reza
The selected answer is almostright. if breakstatement be mixed by labelthen it can be used in ifstatement without needing to be in a loop. The following code is completely valid, compiles and runs.
所选答案几乎是正确的。ifbreak语句被混合到labelthen 它可以在 if语句中使用而无需在循环中。以下代码完全有效，编译运行。
public class Test {
public static void main(String[] args) {
int i=0;
label:if(i>2){
break label;
}
}
}
However if we remove the label, it fails to compile.
但是，如果我们删除标签，它将无法编译。
回答by PedroZGZ
for (int i = 0; i < array.length; i++) {
jumpIf: if (condition) {
statement;
break jumpIf;
}
}
