Java: Does String.Format exist in Java like in C#?

问题

Something I discovered I like about C# are properties & String.Format.

Does something like String.Format from C# exist in Java?

C# ex:

int myNum = 2; 
int myNumSq = myNum * myNum;
String MyString = String.Format("Your lucky numbers are: {0}, & {1}", myNum, myNumSq); 

回答1:

It' even called String.format():

String myString = String.format("Your lucky numbers are: %d, & %d", myNum, myNumSq);

This method is available since Java 1.5.

回答2:

Yes, the class in question is "MessageFormat":

http://download.oracle.com/javase/6/docs/api/java/text/MessageFormat.html

MessageFormat.Format("Your lucky numbers are: {0}, & {1}", myNum, myNumSq);

(Not sure if auto-boxing will work correctly in this case - you might need to convert the int to an Integer first)

回答3:

String myString = String.format("Your lucky numbers are: %d, & %d", myNum, myNumSq);

来源：https://stackoverflow.com/questions/6482463/java-does-string-format-exist-in-java-like-in-c