The statements on line 1, 2, and 3, and the comparison on line 4, all form one basic block that ends with the conditional jump implementing the if statement.
行是声明行，第四行上是比较，所有这些组成了以传统跳跃执行结尾的基本块。
The return keyword is optional here and it is rarely used, except when returning out of the middle of a block (e.g., in an if statement).
return关键字在这里是可选的，而且很少被用到，除非在一段代码中间返回(比如在一个if语句块中)。
The if statement, which executes a particular block of statements based on the result of a test expression.
if语句，它基于测试表达式的结果执行一个特定的语句块。
The if statement supports an optional else clause that indicates a block of program statements that should be processed if the Boolean expression evaluates False.
if语句支持一个可选的else子句，指示当布尔表达式计算为False时应该处理的程序语句块。
Once we've determined that this statement is an if(Logger.isLogging()) statement, we need to figure out the boundaries of the if's block of code.
确定了这个语句是if(Logger.isLogging())语句后，我们需要找出 if代码块的边界。
The while loop, as was the case with the if statement, supports an optional else clause containing a block of program statements executed when the expression is False.
while循环与if语句一样，支持一个可选的else子句，其中包含一个当表达式计算为False时执行的程序语句块。
The while loop, as was the case with the if statement, supports an optional else clause containing a block of program statements executed when the expression is False.
while循环与if语句一样，支持一个可选的else子句，其中包含一个当表达式计算为False时执行的程序语句块。
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