upgrade Try.java

This commit is contained in:
ehlxr 2020-12-11 17:55:59 +08:00
parent 758df9c183
commit fe1a8881dd

View File

@ -49,17 +49,15 @@ public class Try {
return new Try.F<>(function);
}
public static Try.V of(Void v) {
return new Try.V(v);
}
@SuppressWarnings("ConstantConditions")
public static void main(String[] args) {
String param = "10s";
Long result = Try.<String, Long>of(Long::valueOf).get(param, -1L, Throwable::printStackTrace);
System.out.println(result);
// 有返回值无入参
System.out.println(Try.of(() -> Long.valueOf("s")).get(0L));
System.out.println(Try.of(() -> Long.valueOf("s")).get(0L, e -> {
}));
System.out.println(Try.of(() -> Long.valueOf("21")).get(0L, e -> {
}));
@ -67,51 +65,20 @@ public class Try {
System.out.println(Try.<String, Long>of(Long::valueOf).get("s", 0L, e -> {
}));
ArrayList<String> list = new ArrayList<>();
ArrayList<String> list = null;
// 无返回值无入参
Try.<String>of(e1 -> list.clear()).accept(null, e -> System.out.println("...." + e.getMessage()));
Try.of(() -> Thread.sleep(-1L)).exec();
// 无返回值有入参
Try.<String>
of(v -> list.add(10, v))
.accept("test", e -> System.out.println(e.getMessage()));
of(v -> list.add(0, v))
.accept("test", e -> System.out.println("222222" + e.getMessage()));
}
public static class C<T> {
private final Consumer<? super T> consumer;
C(Consumer<? super T> consumer) {
Objects.requireNonNull(consumer, "No value present");
this.consumer = consumer;
}
/**
* 如果有异常忽略否则计算结果
*
* @param t 要计算的入参
*/
public void accept(T t) {
try {
consumer.accept(t);
} catch (Throwable e) {
e.printStackTrace();
}
}
/**
* 如果有异常调用自定义异常处理表达式并返回默认值否则返回计算结果
*
* @param t 要计算的入参
* @param e 自定义异常处理 lambda 表达式
*/
public void accept(T t, Consumer<? super Throwable> e) {
try {
consumer.accept(t);
} catch (Throwable th) {
e.accept(th);
}
}
@FunctionalInterface
public interface Void {
void exec() throws Throwable;
}
public static class S<R> {
@ -197,4 +164,73 @@ public class Try {
}
}
}
}
public static class V {
private final Void v;
V(Void v) {
Objects.requireNonNull(v, "No value present");
this.v = v;
}
/**
* 如果有异常忽略否则计算结果
*/
public void exec() {
try {
v.exec();
} catch (Throwable e) {
e.printStackTrace();
}
}
/**
* 如果有异常调用自定义异常处理表达式并返回默认值否则计算结果
*
* @param e 自定义异常处理 lambda 表达式
*/
public void exec(Consumer<? super Throwable> e) {
try {
v.exec();
} catch (Throwable th) {
e.accept(th);
}
}
}
public static class C<T> {
private final Consumer<? super T> consumer;
C(Consumer<? super T> consumer) {
Objects.requireNonNull(consumer, "No value present");
this.consumer = consumer;
}
/**
* 如果有异常忽略否则计算结果
*
* @param t 要计算的入参
*/
public void accept(T t) {
try {
consumer.accept(t);
} catch (Throwable e) {
e.printStackTrace();
}
}
/**
* 如果有异常调用自定义异常处理表达式并返回默认值否则计算结果
*
* @param t 要计算的入参
* @param e 自定义异常处理 lambda 表达式
*/
public void accept(T t, Consumer<? super Throwable> e) {
try {
consumer.accept(t);
} catch (Throwable th) {
e.accept(th);
}
}
}
}