Java 中字符零 (0) 的含义是什么？
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What's the meaning of char zero (0) in Java?
提问by Carlos Gavidia-Calderon
Possible Duplicate:
Java string replace and the NUL (NULL, ASCII 0) character?
I'm doing some String algorithms in Java, and i noticed that wherever i include a char with the value of 0 (zero) it marks the end of the String. Like this:
我正在用 Java 做一些字符串算法，我注意到无论我在哪里包含一个值为 0（零）的字符，它都标志着字符串的结束。像这样：
String aString = "I'm a String";
char[] aStringArray = aString.toCharArray();
aStringArray[1] = 0;
System.out.println(new String(aStringArray)); //It outputs "I"
What's the reason/cause of this behaviour?
这种行为的原因/原因是什么？
采纳答案by óscar López
The character '\0'is the null character. It's a control character, and it does notterminate the string, that's not how strings work in Java (that's how they work in C, though.)
该字符'\0'为空字符。它是一个控制字符，它不会终止字符串，这不是字符串在 Java 中的工作方式（不过，这就是它们在 C 中的工作方式。）
回答by Java42
For some additional insight, add the following to you code:
要获得更多见解，请将以下内容添加到您的代码中：
System.out.println(new String(aStringArray).length());
for (Byte b : new String(aStringArray).getBytes()) {
System.out.print("["+b+"]");
}
Your rendering system (console or output window) is not displaying everything.
您的渲染系统（控制台或输出窗口）并未显示所有内容。
回答by M Platvoet
I'm wondering if you have posted your actual code. When using the String(byte[])constructor the actual length of the string is dependent on the contents of the array.
我想知道你是否已经发布了你的实际代码。使用String(byte[])构造函数时，字符串的实际长度取决于数组的内容。
