72 lines
1.7 KiB
Java
72 lines
1.7 KiB
Java
//: generics/ThrowGenericException.java
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import java.util.*;
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interface Processor<T,E extends Exception> {
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void process(List<T> resultCollector) throws E;
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}
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class ProcessRunner<T,E extends Exception>
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extends ArrayList<Processor<T,E>> {
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List<T> processAll() throws E {
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List<T> resultCollector = new ArrayList<T>();
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for(Processor<T,E> processor : this)
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processor.process(resultCollector);
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return resultCollector;
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}
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}
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class Failure1 extends Exception {}
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class Processor1 implements Processor<String,Failure1> {
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static int count = 3;
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public void
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process(List<String> resultCollector) throws Failure1 {
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if(count-- > 1)
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resultCollector.add("Hep!");
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else
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resultCollector.add("Ho!");
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if(count < 0)
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throw new Failure1();
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}
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}
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class Failure2 extends Exception {}
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class Processor2 implements Processor<Integer,Failure2> {
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static int count = 2;
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public void
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process(List<Integer> resultCollector) throws Failure2 {
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if(count-- == 0)
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resultCollector.add(47);
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else {
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resultCollector.add(11);
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}
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if(count < 0)
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throw new Failure2();
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}
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}
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public class ThrowGenericException {
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public static void main(String[] args) {
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ProcessRunner<String,Failure1> runner =
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new ProcessRunner<String,Failure1>();
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for(int i = 0; i < 3; i++)
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runner.add(new Processor1());
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try {
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System.out.println(runner.processAll());
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} catch(Failure1 e) {
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System.out.println(e);
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}
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ProcessRunner<Integer,Failure2> runner2 =
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new ProcessRunner<Integer,Failure2>();
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for(int i = 0; i < 3; i++)
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runner2.add(new Processor2());
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try {
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System.out.println(runner2.processAll());
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} catch(Failure2 e) {
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System.out.println(e);
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}
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}
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} ///:~
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