I have pattern like '{YY}-{MM}-{SEQNO}'. I want to replace above string by dynamic value.
For example
{YY} with - 17
{MM} with - 06
{SEQNO} WITH - 0001
What is the way to that in java?
asked Jun 14, 2017 at 11:44
Shiladittya Chakraborty
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3 Answers
Use String.replace().
String template = "'{YY}-{MM}-{SEQNO}'";
template = template.replace("{YY}", "17");
template = template.replace("{MM}", "06");
template = template.replace("{SEQNO}", "0001");
(Thanks to @RealSkeptic for improvements).
2 Comments
RealSkeptic
The replacement should include the braces. You don't want to get
{17}-{06}-{0001}. Also, you probably don't want to replace the template itself.
Steve Smith
@RealSkeptic Thanks. I wasn't sure if OP wanted the braces or not.
If you want to print like 17-06-0001 Use
System.out.printf("%S-%S-%S\n", ""+17, ""+06, ""+0001);
or If you want to print like 17-6-1 Use
System.out.printf("%d-%d-%d\n", 17, 06, 0001);
method one(easier method):
String a = "{YY}-{MM}-{SEQNO}";
a = a.replace("YY", "17").replace("MM", "06").replace("SEQNO", "0001");
System.out.println(a);
//Output: {17}-{06}-{0001}
method two:
a = Pattern.compile("YY").matcher(a).replaceAll("17");
a = Pattern.compile("MM").matcher(a).replaceAll("06");
a = Pattern.compile("SEQNO").matcher(a).replaceAll("0001");
System.out.println("My Output is : " +a);
//Output: My Output is : {17}-{06}-{0001}
Method three:
Have a look at this question -without using replace().
String.replaceAll()String.replace()is better, as it doesn't require regular expressions - this is more efficient and has less problems with special characters.