java 如何让 toString() 返回多行字符串？
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How can I have toString() return a multi-line string?
提问by Supernaturalgirl 1967
I'm working on a program that searches through an array and finds the smallest value and then prints out the time, firstName, and lastName of the runner.
我正在开发一个程序，该程序搜索数组并找到最小值，然后打印出跑步者的时间、名字和姓氏。
What I need to figure out is how to return the three values on separate lines, something like:
我需要弄清楚的是如何在单独的行上返回三个值，例如：
public String toString() {
return String.format( firstName + " " + lastName + " " + Time );
}
That's what I have right now
这就是我现在所拥有的
Is there a way to have the three values print out on separate lines?
有没有办法将三个值打印在不同的行上？
采纳答案by prashant thakre
Try This
试试这个
public String toString(){ return String.format( firstName + ".%n " + lastName + ".%n " + Time);
回答by Leonard Brünings
String.format("%s%n%s%n%s", firstName, lastName, Time);
if you are using format then use the format string with arguments.
如果您使用格式，则使用带参数的格式字符串。
%s= String%n= new line
%s= 字符串%n= 新行
回答by user1032613
To print them on different lines, you need to add a "line break", which is either "\n" or "\r\n" depends on the Operating System you are on.
要将它们打印在不同的行上，您需要添加一个“换行符”，“\n”或“\r\n”取决于您使用的操作系统。
public String toString(){
return String.format( firstName + "\n" + lastName + "\n" + Time);
回答by Dan
A new line depends on OS which is defined by System.getProperty("line.separator");
新行取决于由以下定义的操作系统 System.getProperty("line.separator");
So:
所以：
public String toString() {
String myEol = System.getProperty("line.separator");
return String.format( firstName + myEol + lastName + myEol + Time);
}
