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Java 8 way to concatenate strings #882

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Java 8 way to concatenate strings #882

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e3775d4
Java 8 way to concatenate strings
medvedev Oct 9, 2017
efb1273
Merge branch 'master' into java8-way-to-concatenate-strings
lesv Oct 11, 2017
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18 changes: 7 additions & 11 deletions appengine-java8/endpoints-v2-backend/src/main/java/com/example/echo/Echo.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,9 @@
import com.google.api.server.spi.config.Nullable;
import com.google.api.server.spi.response.UnauthorizedException;

import java.util.Collections;
import java.util.List;

/**
* The Echo API which Endpoints will be exposing.
*/
Expand Down Expand Up @@ -109,17 +112,10 @@ public Message echoApiKey(Message message, @Named("n") @Nullable Integer n) {
// [END echo_api_key]

private Message doEcho(Message message, Integer n) {
if (n != null && n >= 0) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
if (i > 0) {
sb.append(" ");
}
sb.append(message.getMessage());
}
message.setMessage(sb.toString());
}
return message;
List<String> elements = Collections.nCopies(n, message.getMessage());
Message response = new Message();
response.setMessage(String.join(" ", elements));
return response;
}

/**
Expand Down