小编use*_*349的帖子

我有一个byte[4096]并且想知道检查所有值是否为零的最快方法是什么？

有没有比做更快的方法:

byte[] b = new byte[4096];
b[4095] = 1;
for(int i=0;i<b.length;i++)
    if(b[i] != 0)
        return false; // Not Empty

出于调试原因,我希望能够运行通过控制台输入的代码.例如:

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
while(true){
    String str = br.readLine(); //This can return 'a = 5;','b = "Text";' or 'pckg.example.MyClass.run(5);'
    if(str == null)
        return;
    runCode(str); //How would I do this?
}

Using Firefox I am trying to download some data from Google Drive using XMLHttpRequest. In the debug console it gives me [302 Moved Temporarily] and the data i receive is empty. How can i get XMLHttpRequest to follow a redirect response? Also I am using https if it changes things.