java 如何在 toString 中放置新行 (\n)？
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How can I put new line (\n) in toString?
提问by user2109126
How can I add \nin toString?
如何在 toString 中添加\n？
public String toString() {
return (friendName+houseNumber+road);
}
回答by Addict
Use
利用
return (friendName+"\n"+houseNumber+"\n"+road);
回答by RNJ
I would use StringBuilder and also may your code platform agnostic by querying the line separator
我会使用 StringBuilder，也可以通过查询行分隔符来使您的代码平台不可知
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(friendName).append(System.getProperty("line.separator"));
sb.append(houseNumber).append(System.getProperty("line.separator"));
sb.append(road));
return sb.toString();
}
回答by PermGenError
you haven't concatenated properly, it has to be like this:
你没有正确连接，它必须是这样的：
return (friendName + "\n" + houseNumber + "\n" + road);
回答by crstamps2
Change this:
改变这个：
return (friendName+"\n+houseNumber"\n"+road);
To this:
对此：
return (friendName+"\n"+houseNumber+"\n"+road);
回答by Wendelin Wimmer
The answer from Addict is correct so:
Addict 的回答是正确的，所以：
return (friendName+"\n"+houseNumber+"\n"+road);
In advance you can try to write the following:
您可以提前尝试编写以下内容：
return (friendName+"\r\n"+houseNumber+"\r\n"+road);
Because it is OS dependent: Windows: \r\n, Unix: \n, Mac: \r
因为它依赖于操作系统：Windows：\r\n，Unix：\n，Mac：\r
回答by Survivor
Maybe you can try:
也许你可以试试：
@Override
public String toString(){
return ""+friendName + "\n\n" + houseNumber + "\n\n" + road+"";
}
