Java Reference
In-Depth Information
Display 3.4
Comparing Strings
1
public class
StringComparisonDemo
2 {
3
public static void
main(String[] args)
4 {
5 String s1 = "Java isn't just for breakfast.";
6 String s2 = "JAVA isn't just for breakfast.";
7
if
(s1.equals(s2))
8 System.out.println("The two lines are equal.");
9
else
10 System.out.println("The two lines are not equal.");
11
if
(s2.equals(s1))
12 System.out.println("The two lines are equal.");
13
else
14 System.out.println("The two lines are not equal.");
15
if
(s1.equalsIgnoreCase(s2))
16 System.out.println(
"But the lines are equal, ignoring case.");
17
else
18 System.out.println(
"Lines are not equal, even ignoring case.");
19 String s3 = "A cup of java is a joy forever.";
20
if
(s3.compareToIgnoreCase(s1) < 0)
21 {
22 System.out.println("\"" + s3 + "\"");
23 System.out.println("precedes");
24 System.out.println("\"" + s1 + "\"");
25 System.out.println("in alphabetic ordering");
26 }
27
else
28 System.out.println("s3 does not precede s1.");
29 }
30 }
Sample Dialogue
The two lines are not equal.
The two lines are not equal.
But the lines are equal, ignoring case.
"A cup of java is a joy forever."
precedes
"Java isn't just for breakfast."
in alphabetic ordering
