stringcomparisondemo.java

java编程代码

public class StringComparisonDemo
{
    public static void main(String[] args) 
    {
        String s1 = "Java isn't just for breakfast.";
        String s2 = "JAVA isn't just for breakfast.";
 
        if (s1.equals(s2))
            System.out.println("The two lines are equal.");
        else
            System.out.println("The two lines are not equal.");

        if (s2.equals(s1))
            System.out.println("The two lines are equal.");
        else
            System.out.println("The two lines are not equal.");

        if (s1.equalsIgnoreCase(s2))
            System.out.println("But the lines are equal, ignoring case.");
        else
            System.out.println("Lines are not equal, even ignoring case.");

        String s3 = "A cup of java is a joy forever.";
        if (s3.compareToIgnoreCase(s1) < 0)
        {
            System.out.println("\"" + s3 + "\"");
            System.out.println("precedes");
            System.out.println("\"" + s1 + "\"");
            System.out.println("in alphabetic ordering");
        }
        else
            System.out.println("s3 does not precede s1.");
    }
}