修改了一下:
class Hello
{
public static void main(String[] args)
{
String out4="hello world";
out4=out4.replaceAll(" "," ");
System.out.println(out4);
}
}
class Hello
{
public static void main(String[] args)
{
String out4="hello world";
out4=out4.replaceAll(" "," ");
System.out.println(out4);
}
}
public static void main (String[] arg) {
String out4 = "hello world";
String splitChar = String.valueOf((char)88); //要替换的char
out4 = out4.replaceAll(splitChar, " ");
System.out.println(out4);
}
}