---
title: Recipes
description: A collection of common/useful code examples for Kotlin and Java
---


# Recipes

We've written some recipes that demonstrate how to solve common problems with OkHttp. Read through them to learn about how everything works together. Cut-and-paste these examples freely; that's what they're for.

### Synchronous Get ([.kt][SynchronousGetKotlin], [.java][SynchronousGetJava])

import org.apache.maven.lifecycle.internal.builder.Builder;
import org.apache.maven.project.MavenProject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Builds the full lifecycle in weave-mode (phase by phase as opposed to project-by-project).
 * <p>
 * This builder uses a number of threads equal to the minimum of the degree of concurrency (which is the thread count

      value = (value shl 4) + hexDigit
      i++
    }
    val groupLength = i - groupOffset
    if (groupLength == 0 || groupLength > 4) return null // Group is the wrong size.

    // We've successfully read a group. Assign its value to our byte array.
    address[b++] = (value.ushr(8) and 0xff).toByte()
    address[b++] = (value and 0xff).toByte()
  }

    protected char @Nullable [] escape(char c) {
      return c < replaceLength ? replacements[c] : null;
    }
  }

  // Replacement mappings.
  private final Map<Character, String> map;

  // The highest index we've seen so far.
  private int max = -1;

  /** Construct a new sparse array builder. */
  public CharEscaperBuilder() {
    this.map = new HashMap<>();
  }

sejam
fosse
fôssemos
fossem
for
formos
forem
serei
será
seremos
serão
seria
seríamos
seriam
tenho
tem
temos
tém
tinha
tínhamos
tinham
tive
teve
tivemos
tiveram
tivera
tivéramos
tenha
tenhamos
tenham
tivesse
tivéssemos
tivessem
tiver
tivermos
tiverem
terei
terá
teremos
terão
teria
teríamos

import static org.apache.maven.lifecycle.internal.concurrent.BuildStep.TEARDOWN;

/**
 * Executes the Maven build plan in a concurrent manner, handling the lifecycle phases and plugin executions.
 * This executor implements a weave-mode build strategy, where builds are executed phase-by-phase rather than
 * project-by-project.
 *
 * <h2>Key Features:</h2>
 * <ul>
 *   <li>Concurrent execution of compatible build steps across projects</li>

        };

        // Simulate the shutdown hook being run
        spyContext.run();

        assertTrue(spyContext.isCloseCalled()); // Verify close() was called
        // We can't directly assert on log.warn, but we've covered the path
    }

        if (verifySignature(toVerify, signingCert, result.size - 1)) {
          i.remove()
          result.add(signingCert)
          continue@followIssuerChain
        }
      }

      // We've reached the end of the chain. If any cert in the chain is trusted, we're done.
      if (foundTrustedCertificate) {
        return result
      }

      // The last link isn't trusted. Fail.

        System.out.printf("XXX: %s %s%n", url, e);
      } finally {
        currentThread.setName(originalName);
      }
    }
  }

  public void fetch(HttpUrl url) throws IOException {
    // Skip hosts that we've visited many times.
    AtomicInteger hostnameCount = new AtomicInteger();
    AtomicInteger previous = hostnames.putIfAbsent(url.host(), hostnameCount);
    if (previous != null) hostnameCount = previous;

Open Source Code of Conduct
===========================

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thousands of people who have already contributed to our projects — and we want to ensure our community
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