1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class LambdaBreakpoints1 {
public static void main(String[] args) throws Exception {
ExecutorService executor = Executors.newSingleThreadExecutor();
StringBuilder s = new StringBuilder();
CompletableFuture<?> f = CompletableFuture.completedFuture("0");
f = f.thenApply((x) -> {
s.append(x).append("1");
return s.toString(); // breakpoint 1
})
.thenApply(x ->
s.append("2") // breakpoint 2
)
.thenRun(() -> lastCall(s))
.thenRunAsync(() -> {}, executor);
executor.shutdown();
f.get();
String result = s.toString();
System.out.println(result); // breakpoint 4
}
private static void lastCall(StringBuilder b) {
b.append(C.s());
}
static class C {
static String s() {
if (Boolean.valueOf("true")) // breakpoint 3
return "3"; // <--- breakpoint 3 should not be here
return "???";
}
}
}
|
