java - throw 类<？扩展Throwable>

所以我有一个看起来像这样的函数：

    public void addExceptionCommands(Class<? extends Throwable> exClass, Command... commands) {
        for (Command command : commands) {

            try {
                //Push the command to the stack of executed commands
                executedCommands.push(command);
                command.execute();

            } catch (CouldNotExecuteCommandException e) {
                // Default strategy is to rollback
                rollback();
                // Log
                e.printStackTrace();
                //I want to throw exClass here
            }
        }
    }

我想抛出exClass，如何实现呢？
抛出exClass不起作用

编辑：
谢谢大家的所有回答，我最终使用了Supplier：D

最佳答案

您只能抛出Throwable和Class isnt的子类。

但是，您可以修改方法以接受生成新Throwable的供应商，然后可以抛出该Throwable：

    public <T extends Throwable> void addExceptionCommands(Supplier<T> exceptionSupplier, Command... commands) throws T {
        for (Command command : commands) {
            try {
                //Push the command to the stack of executed commands
                executedCommands.push(command);
                command.execute();
            } catch (CouldNotExecuteCommandException e) {
                // Default strategy is to rollback
                rollback();
                // Log
                e.printStackTrace();
                //I want to throw exClass here

                final T exception = exceptionSupplier.get();
                exception.addSuppressed(e);

                throw exception;
            }
        }
    }

然后，您可以像这样调用您的方法：

addExceptionCommands(YourException::new, command1, command2, ...);

关于java - throw 类<？扩展Throwable>，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/58959238/