java.util.Arrays.toString()方法的使用及代码示例

x33g5p2x  于2022-01-15 转载在 其他  
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本文整理了Java中java.util.Arrays.toString()方法的一些代码示例，展示了Arrays.toString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Arrays.toString()方法的具体详情如下：
包路径：java.util.Arrays
类名称：Arrays
方法名：toString

Arrays.toString介绍

[英]Creates a String representation of the byte[] passed. The result is surrounded by brackets ( "[]"), each element is converted to a String via the String#valueOf(int) and separated by ", ". If the array is null, then "null" is returned.
[中]创建传递的字节[]的字符串表示形式。结果用括号（“[]”）包围，每个元素通过字符串#valueOf（int）转换为字符串，并用“，”分隔。如果数组为null，则返回“null”。

代码示例

代码示例来源：origin: stackoverflow.com

int[] intArray = { 7, 9, 5, 1, 3 };
System.out.println(Arrays.toString(intArray));

代码示例来源：origin: stackoverflow.com

List<String> list = Arrays.asList("foo", "bar", "waa");
CharSequence[] cs = list.toArray(new CharSequence[list.size()]);
System.out.println(Arrays.toString(cs)); // [foo, bar, waa]

代码示例来源：origin: h2oai/h2o-2

private void sampleThresholds(int yi){
 _ti[yi] = (_newThresholds[yi].length >> 2);
 try{ Arrays.sort(_newThresholds[yi]);} catch(Throwable t){
  System.out.println("got AIOOB during sort?! ary = " + Arrays.toString(_newThresholds[yi]));
  return;
 } // sort throws AIOOB sometimes!
 for (int i = 0; i < _newThresholds.length; i += 4)
  _newThresholds[yi][i >> 2] = _newThresholds[yi][i];
}
@Override public void processRow(long gid, final double [] nums, final int ncats, final int [] cats, double [] responses /* time...*/){

代码示例来源：origin: stackoverflow.com

public static void main(String[] args) {
  final String str = "<tag>apple</tag><b>hello</b><tag>orange</tag><tag>pear</tag>";
  System.out.println(Arrays.toString(getTagValues(str).toArray())); // Prints [apple, orange, pear]
}

private static final Pattern TAG_REGEX = Pattern.compile("<tag>(.+?)</tag>");

private static List<String> getTagValues(final String str) {
  final List<String> tagValues = new ArrayList<String>();
  final Matcher matcher = TAG_REGEX.matcher(str);
  while (matcher.find()) {
    tagValues.add(matcher.group(1));
  }
  return tagValues;
}

代码示例来源：origin: stackoverflow.com

import java.util.*;
 //...
 List<int[]> rowList = new ArrayList<int[]>();
 rowList.add(new int[] { 1, 2, 3 });
 rowList.add(new int[] { 4, 5, 6 });
 rowList.add(new int[] { 7, 8 });
 for (int[] row : rowList) {
   System.out.println("Row = " + Arrays.toString(row));
 } // prints:
  // Row = [1, 2, 3]
  // Row = [4, 5, 6]
  // Row = [7, 8]
 System.out.println(rowList.get(1)[1]); // prints "5"

代码示例来源：origin: netty/netty

/**
 * Loads the first available library in the collection with the specified
 * {@link ClassLoader}.
 *
 * @throws IllegalArgumentException
 *         if none of the given libraries load successfully.
 */
public static void loadFirstAvailable(ClassLoader loader, String... names) {
  List<Throwable> suppressed = new ArrayList<Throwable>();
  for (String name : names) {
    try {
      load(name, loader);
      return;
    } catch (Throwable t) {
      suppressed.add(t);
      logger.debug("Unable to load the library '{}', trying next name...", name, t);
    }
  }
  IllegalArgumentException iae =
      new IllegalArgumentException("Failed to load any of the given libraries: " + Arrays.toString(names));
  ThrowableUtil.addSuppressedAndClear(iae, suppressed);
  throw iae;
}

代码示例来源：origin: org.testng/testng

"Arrays not equal: " + Arrays.toString(expected) + " and " + Arrays.toString(actual),
   message);
 actualCollection.add(a);
if (actualCollection.size() != 0) {
 failAssertNoEqual(
   "Arrays not equal: " + Arrays.toString(expected) + " and " + Arrays.toString(actual),
   message);

代码示例来源：origin: apache/kylin

@Test
public void testGet() throws Exception {
  int getNum = 3000;
  List<String[]> keys = Lists.newArrayList();
  for (int i = 0; i < getNum; i++) {
    String[] keyi = new String[] { "keyyyyy" + random.nextInt(sourceRowNum) };
    keys.add(keyi);
  }
  long start = System.currentTimeMillis();
  for (int i = 0; i < getNum; i++) {
    String[] row = lookupTable.getRow(new Array<>(keys.get(i)));
    if (row == null) {
      System.out.println("null value for key:" + Arrays.toString(keys.get(i)));
    }
  }
  long take = System.currentTimeMillis() - start;
  System.out.println("muliti get " + getNum + " rows, take " + take + " ms");
}

代码示例来源：origin: apache/drill

@Override
 public void visitArrayMemberValue(ArrayMemberValue node) {
  values.add(Arrays.toString(node.getValue()));
 }
});

代码示例来源：origin: apache/drill

out.print(indentString(indent));
   if (appendToHeader != null && !appendToHeader.isEmpty()) {
    out.println(xpl_note.displayName() + appendToHeader);
   } else {
    out.println(xpl_note.displayName());
     if (outputOperators != null) {
      ((JSONObject) jsonOut.get(JSONObject.getNames(jsonOut)[0])).put(OUTPUT_OPERATORS,
        Arrays.toString(outputOperators.toArray()));
Arrays.sort(methods, new MethodComparator());
      out.print(" ");
     out.println(val);
    List l = val instanceof List ? (List)val : new ArrayList((Set)val);
    if (out != null && !skipHeader && l != null && !l.isEmpty()) {
     out.print(header);

代码示例来源：origin: apache/hbase

final List<Cell> results = new ArrayList<>();
final List<Cell> actualKVs = new ArrayList<>();
final String columnRestrictionStr =
  columnArr.length == 0 ? "all columns"
    : ("columns=" + Arrays.toString(columnArr));
final String testDesc =
  "Bloom=" + bloomType + ", compr=" + comprAlgo + ", "
long seekCount = StoreFileScanner.getSeekCount() - initialSeekCount;
if (VERBOSE) {
 System.err.println("Seek count: " + seekCount + ", KVs returned: "
  + actualKVs.size() + ". " + testDesc +
  (lazySeekEnabled ? "\n" : ""));

代码示例来源：origin: org.apache.lucene/lucene-core

String lastSegmentsFile = SegmentInfos.getLastCommitSegmentsFileName(files);
if (lastSegmentsFile == null) {
 throw new IndexNotFoundException("no segments* file found in " + dir + ": files: " + Arrays.toString(files));
  delCount += info.getDelCount();
 infoStream.println(String.format(Locale.ROOT, "%.2f%% total deletions; %d documents; %d deleteions",
                  100.*delCount/maxDoc,
                  maxDoc,
 result.segmentInfos.add(segInfoStat);
 msg(infoStream, "  " + (1+i) + " of " + numSegments + ": name=" + info.info.name + " maxDoc=" + info.info.maxDoc());
 segInfoStat.name = info.info.name;

代码示例来源：origin: apache/ignite

/**
   * Traverse tree on the current level and starts procedure of child traversing.
   *
   * @param map The current state of the data.
   * @param nextPnt Next point.
   * @param dimensionNum Dimension number.
   */
  private void traverseTree(Map<Integer, Double[]> map, Double[] nextPnt, int dimensionNum) {
    dimensionNum++;

    if (dimensionNum == sizeOfParamVector){
      Double[] paramSet = Arrays.copyOf(nextPnt, sizeOfParamVector);
      System.out.println(Arrays.toString(paramSet));
      params.add(paramSet);
      return;
    }

    Double[] valuesOfCurrDimension = map.get(dimensionNum);

    for (Double specificValue : valuesOfCurrDimension) {
      nextPnt[dimensionNum] = specificValue;
      traverseTree(map, nextPnt, dimensionNum);
    }
  }
}

代码示例来源：origin: apache/incubator-gobblin

private String vectorToString(double[] vector) {
 List<String> tokens = Lists.newArrayListWithCapacity(this.dimensionIndex.size());
 for (Map.Entry<String, Integer> dimension : dimensionIndex.entrySet()) {
  tokens.add(dimension.getKey() + ": " + vector[dimension.getValue()]);
 }
 return Arrays.toString(tokens.toArray());
}

代码示例来源：origin: org.apache.logging.log4j/log4j-core

static void assertFileContents(final int runNumber) throws IOException {
  final Path path = Paths.get(FOLDER + "/audit.tmp");
  final List<String> lines = Files.readAllLines(path, Charset.defaultCharset());
  int i = 1;
  final int size = lines.size();
  for (final String string : lines) {
    if (string.startsWith(",,")) {
      final Path folder = Paths.get(FOLDER);
      final File[] files = folder.toFile().listFiles();
      Arrays.sort(files);
      System.out.println("Run " + runNumber + ": " + Arrays.toString(files));
      Assert.fail(
          String.format("Run %,d, line %,d of %,d: \"%s\" in %s", runNumber, i++, size, string, lines));
    }
  }
}

代码示例来源：origin: hankcs/HanLP

break;
    default:
      System.err.printf("最多支持载入3个模型，然而传入了多于3个: %s", Arrays.toString(models));
      return;
  if (option.input == null)
    scanner = new Scanner(System.in);
    scanner = new Scanner(new File(option.input), "utf-8");
System.err.println(e.getMessage());
Args.usage(option);
System.err.println("发生了IO异常，请检查文件路径");
e.printStackTrace();

代码示例来源：origin: androidannotations/androidannotations

private List<AndroidAnnotationsPlugin> loadPlugins() throws FileNotFoundException, VersionNotFoundException {
  ServiceLoader<AndroidAnnotationsPlugin> serviceLoader = ServiceLoader.load(AndroidAnnotationsPlugin.class, AndroidAnnotationsPlugin.class.getClassLoader());
  List<AndroidAnnotationsPlugin> plugins = new ArrayList<>();
  for (AndroidAnnotationsPlugin plugin : serviceLoader) {
    plugins.add(plugin);
    if (plugin.shouldCheckApiAndProcessorVersions()) {
      plugin.loadVersion();
    }
  }
  LOGGER.info("Plugins loaded: {}", Arrays.toString(plugins.toArray()));
  return plugins;
}

代码示例来源：origin: stackoverflow.com

public static void main(String[] args) throws Exception {
   ArrayList<String[]> listOfStringArrays = new ArrayList<String[]>();
   listOfStringArrays.add(new String[] {"x","y","z"});
   listOfStringArrays.add(new String[] {"a","b","c"});
   listOfStringArrays.add(new String[] {"m","n","o"});
   Collections.sort(listOfStringArrays,new Comparator<String[]>() {
     public int compare(String[] strings, String[] otherStrings) {
       return strings[1].compareTo(otherStrings[1]);
     }
   });
   for (String[] sa : listOfStringArrays) {
     System.out.println(Arrays.toString(sa));
   }
   /* prints out 
    [a, b, c]
    [m, n, o]
    [x, y, z]
   */ 
 }

代码示例来源：origin: redisson/redisson

/**
 * Loads the first available library in the collection with the specified
 * {@link ClassLoader}.
 *
 * @throws IllegalArgumentException
 *         if none of the given libraries load successfully.
 */
public static void loadFirstAvailable(ClassLoader loader, String... names) {
  List<Throwable> suppressed = new ArrayList<Throwable>();
  for (String name : names) {
    try {
      load(name, loader);
      return;
    } catch (Throwable t) {
      suppressed.add(t);
      logger.debug("Unable to load the library '{}', trying next name...", name, t);
    }
  }
  IllegalArgumentException iae =
      new IllegalArgumentException("Failed to load any of the given libraries: " + Arrays.toString(names));
  ThrowableUtil.addSuppressedAndClear(iae, suppressed);
  throw iae;
}

代码示例来源：origin: apache/incubator-gobblin

throw new IOException(String.format("Path %s does not exist.", path));
 log.info(String.format("Found %d input files at %s: %s", inputs.length, path, Arrays.toString(inputs)));
 for (FileStatus input : inputs) {
  allPaths.add(input.getPath().toString());
  allPaths.size() % maxMappers == 0 ? allPaths.size() / maxMappers : allPaths.size() / maxMappers + 1;
while (pathsIt.hasNext()) {
 Iterator<String> limitedIterator = Iterators.limit(pathsIt, numTasksPerMapper);
 splits.add(new GobblinSplit(Lists.newArrayList(limitedIterator)));

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