Session5 module6 7 generic regularexpression
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A Guide To Advanced Java – Module 6
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List list = new ArrayList();
Integer numberInt = new Integer(9);
list.add(numberInt);
Integer n=(Integer) list.get(0);
System.out.println(list);
Before generics, you would write this piece of code:
With generics, this code becomes:
List<Number> list = new ArrayList<Number>();
Number numberInt = new Integer(9); list.add(numberInt);
Integer n= list.get(0);
System.out.println(list);
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A Guide To Advanced Java – Module 6
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There are three types of wildcards used with generics.
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A Guide To Advanced Java – Module 6
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A Guide To Advanced Java – Module 6
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Writing a regular expression is more than a skill it's
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String regex = "\\d+[.]?\\d*";
String data = "abc 23 gfgf 64.434.43gfdgfd";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(data);
//boolean b=m.matches();
while (m.find()) {
System.out.println(m.group());
}
String regex = "\\d+[.]?\\d*";
String data = "abc 23 gfgf 64.434.43gfdgfd";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(data);
//boolean b=m.matches();
while (m.find()) {
System.out.println(m.group());
}
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