assertionerror java

assertionerror java"/>

assertionerror java

在技​​术说明

“Programming With Assertions: Control Flow Invariants”中给出以下代码：

void foo() {

for (...) {

if (...)

return;

}

assert false; // Execution should never reach this point!

}

但是还给出了以下注释：

Note: Use this technique with discretion. If a statement is unreachable as defined in the Java Language Specification, you will get a compile time error if you try to assert that it is not reached. Again, an acceptable alternative is simply to throw an AssertionError.

您断定断言时可能不会抛出AssertionError抛出.由于AssertionError构造函数是公共的,并且由于可能没有替换AssertionError(String message,Throwable cause),我猜你即使关闭它们也应该期望它们.

在Jon Skeet建议的情况下,对不可达代码(即没有任何真正的表达式)抛出一个AssertionError将永远不会减慢代码,所以在性能方面不会受到伤害.

所以到最后抛出AssertionError似乎可以.