32 lines
742 B
Java
32 lines
742 B
Java
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//: concurrency/ResponsiveUI.java
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// User interface responsiveness.
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// {RunByHand}
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class UnresponsiveUI {
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private volatile double d = 1;
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public UnresponsiveUI() throws Exception {
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while(d > 0)
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d = d + (Math.PI + Math.E) / d;
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System.in.read(); // Never gets here
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}
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}
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public class ResponsiveUI extends Thread {
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private static volatile double d = 1;
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public ResponsiveUI() {
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setDaemon(true);
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start();
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}
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public void run() {
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while(true) {
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d = d + (Math.PI + Math.E) / d;
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}
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}
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public static void main(String[] args) throws Exception {
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//! new UnresponsiveUI(); // Must kill this process
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new ResponsiveUI();
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System.in.read();
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System.out.println(d); // Shows progress
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}
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} ///:~
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