How to Put Spaces in a Stringbuilder
Hello I Have Following Method to Display a Promotion Line When I Comment a Shoutbox: Public String getShoutboxUnderline(){ Stringbuilder Builder = New...
Hello I have following method to display a promotion line when I comment a shoutbox:
public String getShoutboxUnderline(){
StringBuilder builder = new StringBuilder();
builder.append("watch");
builder.append("on");
builder.append("youtube");
builder.append(":");
builder.append("Mickey");
builder.append("en");
builder.append("de");
builder.append("stomende");
builder.append("drol");
return builder.toString();
}
But when I get it, I get watchonyoutube:mickeyendestomendedrol, which is without spaces. How do I get spaces in my Stringbuilder?
4 Answers
As of JDK 1.8, you can use a StringJoiner, which is more convenient in your case:
StringJoineris used to construct a sequence of characters separated by a delimiter and optionally starting with a supplied prefix and ending with a supplied suffix.
StringJoiner joiner = new StringJoiner(" "); // Use 'space' as the delimiter
joiner.add("watch") // watch
.add("on") // watch on
.add("youtube") // watch on youtube
.add(":") // etc...
.add("Mickey")
.add("en")
.add("de")
.add("stomende")
.add("drol");
return joiner.toString();
This way, you will not need to add those spaces "manually".
Just invoke builder.append(" ") at the location of your preference.
E.g.
builder
.append("watch")
.append(" ")
.append("on")
...etc.
NB:
- Using the fluent builder syntax here for convenience
- You can also just append a space after each literal instead (save for the last one)
Cleaner way of doing it.
Create a class variable:
private static final String BLANK_SPACE=" ";
Now in you StringBuilder code ,append it where required:
StringBuilder builder = new StringBuilder();
builder.append("watch");
builder.append(BLANK_SPACE);
builder.append("on");
builder.append("youtube");
builder.append(":");
builder.append(BLANK_SPACE);
builder.append("Mickey");
builder.append("en");
builder.append("de");
builder.append(BLANK_SPACE);
builder.append("stomende");
builder.append("drol");
System.out.println(builder.toString());
A space is only a string containing the single character space.
So you can append it exactly as appending any other string.
StringBuilder builder = new StringBuilder();
builder.append("watch");
builder.append(" ");
builder.append("on");
builder.append(" ");
// and so on
Remember also that the append method returns the StringBuilder so it is possible to join appends one after the other as follow
StringBuilder builder = new StringBuilder();
builder.append("watch").append(" ");
builder.append("on").append(" ");
// and so on
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
