43 lines
1.2 KiB
Java
43 lines
1.2 KiB
Java
//: interfaces/interfaceprocessor/StringProcessor.java
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package interfaces.interfaceprocessor;
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import java.util.*;
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public abstract class StringProcessor implements Processor{
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public String name() {
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return getClass().getSimpleName();
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}
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public abstract String process(Object input);
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public static String s =
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"If she weighs the same as a duck, she's made of wood";
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public static void main(String[] args) {
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Apply.process(new Upcase(), s);
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Apply.process(new Downcase(), s);
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Apply.process(new Splitter(), s);
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}
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}
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class Upcase extends StringProcessor {
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public String process(Object input) { // Covariant return
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return ((String)input).toUpperCase();
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}
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}
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class Downcase extends StringProcessor {
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public String process(Object input) {
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return ((String)input).toLowerCase();
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}
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}
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class Splitter extends StringProcessor {
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public String process(Object input) {
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return Arrays.toString(((String)input).split(" "));
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}
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} /* Output:
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Using Processor Upcase
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IF SHE WEIGHS THE SAME AS A DUCK, SHE'S MADE OF WOOD
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Using Processor Downcase
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if she weighs the same as a duck, she's made of wood
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Using Processor Splitter
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[If, she, weighs, the, same, as, a, duck,, she's, made, of, wood]
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*///:~
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