How to use checkArgument method of org.assertj.core.util.Preconditions class

Best Assertj code snippet using org.assertj.core.util.Preconditions.checkArgument

Source:MyersDiff.java

...10 *11 * Copyright 2012-2020 the original author or authors.12 */13package org.assertj.core.util.diff.myers;14import static org.assertj.core.util.Preconditions.checkArgument;15import static org.assertj.core.util.Preconditions.checkState;16import java.util.ArrayList;17import java.util.List;18import org.assertj.core.util.diff.ChangeDelta;19import org.assertj.core.util.diff.Chunk;20import org.assertj.core.util.diff.DeleteDelta;21import org.assertj.core.util.diff.Delta;22import org.assertj.core.util.diff.DiffAlgorithm;23import org.assertj.core.util.diff.InsertDelta;24import org.assertj.core.util.diff.Patch;25/**26 * Copy from https://code.google.com/p/java-diff-utils/.27 * <p>28 * A clean-room implementation of <a href="http://www.cs.arizona.edu/people/gene/">29 * Eugene Myers</a> differencing algorithm.30 *31 * <p> See the paper at <a href="http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps">32 * http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps</a></p>33 *34 * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>35 * @param <T> The type of the compared elements in the 'lines'.36 */37public class MyersDiff<T> implements DiffAlgorithm<T> {38  /** The equalizer. */39  private final Equalizer<T> equalizer;40  /**41   * Constructs an instance of the Myers differencing algorithm.42   */43  public MyersDiff() {44    /* Default equalizer. */45    equalizer = Object::equals;46  }47  /**48   * {@inheritDoc}49   *50   * Return empty diff if get the error while procession the difference.51   */52  @Override53  public Patch<T> diff(final List<T> original, final List<T> revised) {54    checkArgument(original != null, "original list must not be null");55    checkArgument(revised != null, "revised list must not be null");56    PathNode path;57    try {58      path = buildPath(original, revised);59      return buildRevision(path, original, revised);60    } catch (IllegalStateException e) {61      e.printStackTrace();62      return new Patch<>();63    }64  }65  /**66   * Computes the minimum diffpath that expresses de differences67   * between the original and revised sequences, according68   * to Gene Myers differencing algorithm.69   *70   * @param orig The original sequence.71   * @param rev The revised sequence.72   * @return A minimum {@link PathNode Path} across the differences graph.73   * @throws IllegalStateException if a diff path could not be found.74   */75  public PathNode buildPath(final List<T> orig, final List<T> rev) {76    checkArgument(orig != null, "original sequence is null");77    checkArgument(rev != null, "revised sequence is null");78    // these are local constants79    final int N = orig.size();80    final int M = rev.size();81    final int MAX = N + M + 1;82    final int size = 1 + 2 * MAX;83    final int middle = size / 2;84    final PathNode[] diagonal = new PathNode[size];85    diagonal[middle + 1] = new Snake(0, -1, null);86    for (int d = 0; d < MAX; d++) {87      for (int k = -d; k <= d; k += 2) {88        final int kmiddle = middle + k;89        final int kplus = kmiddle + 1;90        final int kminus = kmiddle - 1;91        PathNode prev;92        int i;93        if ((k == -d) || (k != d && diagonal[kminus].i < diagonal[kplus].i)) {94          i = diagonal[kplus].i;95          prev = diagonal[kplus];96        } else {97          i = diagonal[kminus].i + 1;98          prev = diagonal[kminus];99        }100        diagonal[kminus] = null; // no longer used101        int j = i - k;102        PathNode node = new DiffNode(i, j, prev);103        // orig and rev are zero-based104        // but the algorithm is one-based105        // that's why there's no +1 when indexing the sequences106        while (i < N && j < M && equals(orig.get(i), rev.get(j))) {107          i++;108          j++;109        }110        if (i > node.i) node = new Snake(i, j, node);111        diagonal[kmiddle] = node;112        if (i >= N && j >= M) return diagonal[kmiddle];113      }114      diagonal[middle + d - 1] = null;115    }116    // According to Myers, this cannot happen117    throw new IllegalStateException("could not find a diff path");118  }119  private boolean equals(T orig, T rev) {120    return equalizer.equals(orig, rev);121  }122  /**123   * Constructs a {@link Patch} from a difference path.124   *125   * @param path The path.126   * @param orig The original sequence.127   * @param rev The revised sequence.128   * @return A {@link Patch} script corresponding to the path.129   */130  public Patch<T> buildRevision(PathNode path, List<T> orig, List<T> rev) {131    checkArgument(path != null, "path is null");132    checkArgument(orig != null, "original sequence is null");133    checkArgument(rev != null, "revised sequence is null");134    Patch<T> patch = new Patch<>();135    if (path.isSnake())136      path = path.prev;137    while (path != null && path.prev != null && path.prev.j >= 0) {138      checkState(!path.isSnake(), "bad diffpath: found snake when looking for diff");139      int i = path.i;140      int j = path.j;141      path = path.prev;142      int ianchor = path.i;143      int janchor = path.j;144      Chunk<T> original = new Chunk<>(ianchor, copyOfRange(orig, ianchor, i));145      Chunk<T> revised = new Chunk<>(janchor, copyOfRange(rev, janchor, j));146      Delta<T> delta;147      if (original.size() == 0 && revised.size() != 0) {...

Source:ProductServiceImpl.java

...20public class ProductServiceImpl implements ProductService {21    @Override22    public long createProduct(Product product) {23        // æ£æ¥productä¸çåä¸ªåæ®µæ¯å¦åæ³24        Preconditions.checkArgument(product != null, "product is null");25        Preconditions.checkArgument(!Strings.isNullOrEmpty(product.getName()), "product name is empty");26        Preconditions.checkArgument(!Strings.isNullOrEmpty(product.getDescription()), "description name is empty");27        Preconditions.checkArgument(product.getPrice().compareTo(new BigDecimal(0)) > 0, "price<=0 error");28        return DaoUtils.execute(sqlSession -> {29            ProductMapper mapper = sqlSession.getMapper(ProductMapper.class);30            return mapper.save(product);31        });32    }33    @Override34    public Product find(long productId) {35        // æ£æ¥productIdåæ°æ¯å¦åæ³36        Preconditions.checkArgument(productId > 0, "product id error");37        return DaoUtils.execute(sqlSession -> {38            ProductMapper mapper = sqlSession.getMapper(ProductMapper.class);39            return mapper.find(productId);40        });41    }42    @Override43    public List<Product> find(String productName) {44        Preconditions.checkArgument(!Strings.isNullOrEmpty(productName), "productId error");45        return DaoUtils.execute(sqlSession -> {46            ProductMapper mapper = sqlSession.getMapper(ProductMapper.class);47            return mapper.findByName(productName);48        });49    }50}...

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2import java.util.Scanner;3public class 1 {4    public static void main(String[] args) {5        Scanner in = new Scanner(System.in);6        System.out.println("Enter a string: ");7        String str = in.nextLine();8        System.out.println("Enter the index of the character to be checked: ");9        int index = in.nextInt();10        char ch = str.charAt(index);11        System.out.println("Character at index " + index + " is " + ch);12    }13}14	at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)15	at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)16	at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)17	at java.base/java.util.Objects.checkIndex(Objects.java:372)18	at java.base/java.util.ArrayList.get(ArrayList.java:458)19	at 1.main(1.java:12)20Using Preconditions.checkArgument() method:21import org.assertj.core.util.Preconditions;22import java.util.Scanner;23public class 2 {24    public static void main(String[] args) {25        Scanner in = new Scanner(System.in);26        System.out.println("Enter a string: ");27        String str = in.nextLine();28        System.out.println("Enter the index of the character to be checked: ");29        int index = in.nextInt();30        Preconditions.checkArgument(index >= 0 && index < str.length(), "Index out of bounds!");31        char ch = str.charAt(index);32        System.out.println("Character at index " + index + " is " + ch);33    }34}35	at org.assertj.core.util.Preconditions.checkArgument(Preconditions.java:108)36	at 2.main(2.java:14)

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        int i = 10;5        int j = 20;6        Preconditions.checkArgument(i < j, "i should be less than j");7        System.out.println("i is less than j");8    }9}10import org.assertj.core.util.Preconditions;11public class 2 {12    public static void main(String[] args) {13        Object obj = null;14        Preconditions.checkNotNull(obj, "obj is null");15        System.out.println("obj is not null");16    }17}18	at org.assertj.core.util.Preconditions.checkNotNull(Preconditions.java:12)19	at 2.main(2.java:7)20import org.assertj.core.util.Preconditions;21public class 3 {22    public static void main(String[] args) {23        boolean b = false;24        Preconditions.checkState(b, "b is false");25        System.out.println("b is true");26    }27}28	at org.assertj.core.util.Preconditions.checkState(Preconditions.java:16)29	at 3.main(3.java:7)30import org.assertj.core.util.Preconditions;31public class 4 {32    public static void main(String[] args) {33        int i = 10;34        int j = 20;35        Preconditions.checkIndex(i, j, "i is out of bound");36        System.out.println("i is in bound");37    }38}

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        int i = 10;5        Preconditions.checkArgument(i > 0, "i must be greater than 0");6        System.out.println("i is greater than 0");7    }8}9Recommended Posts: Java | AssertJ - assertThat() method10Java | AssertJ - hasSize() method11Java | AssertJ - hasToString() meth

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        int a = 10;5        int b = 20;6        Preconditions.checkArgument(a < b, "a is not less than b");7    }8}

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        String str = "Hello";5        Preconditions.checkArgument(str != null, "String is null");6        System.out.println(str);7    }8}9Check if a String is a valid Java identifier using Character.isJavaIdentifierStart() method in Java10Check if a String is a valid Java identifier using Character.isJavaIdentifierPart() method in Java11Check if a String is a valid Java identifier using Character.isJavaIdentifierStart() and Character.isJavaIdentifierPart() methods in Java12Check if a String is a valid Java identifier using Character.isJavaIdentifierPart() method13Check if a String is a valid Java identifier using Character.isJavaIdentifierStart() method14Check if a String is a valid Java identifier using Character.isJavaIdentifierStart(

checkArgument

Using AI Code Generation

1import static org.assertj.core.util.Preconditions.checkArgument;2import java.util.Scanner;3public class 1 {4public static void main(String[] args) {5Scanner sc = new Scanner(System.in);6System.out.println("Enter the number of elements in the array: ");7int n = sc.nextInt();8int[] arr = new int[n];9System.out.println("Enter the elements of the array: ");10for (int i = 0; i < n; i++) {11arr[i] = sc.nextInt();12}13System.out.println("Enter the index of the array element you want to access: ");14int index = sc.nextInt();15checkArgument(index >= 0 && index < n, "Index out of bounds for the array");16System.out.println("The array element at index " + index + " = " + arr[index]);17System.out.println("The array element successfully accessed");18}19}20at org.assertj.core.util.Preconditions.checkArgument(Preconditions.java:33)21at 1.main(1.java:23)22import static org.assertj.core.util.Preconditions.checkState;23import java.util.Scanner;24public class 2 {25public static void main(String[] args) {26Scanner sc = new Scanner(System.in);27System.out.println("Enter the number of elements in the array: ");28int n = sc.nextInt();29int[] arr = new int[n];30System.out.println("Enter the elements of the array: ");31for (int i = 0; i < n; i++) {32arr[i] = sc.nextInt();33}34System.out.println("Enter the index of the array element you want to access: ");35int index = sc.nextInt();36checkState(index >= 0 && index < n, "Index out of bounds for the array");37System.out.println("The array element at index " + index + " = " + arr[index]);38System.out.println("The array element successfully accessed");39}40}

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        int a = 10, b = 20;5        int c = Preconditions.checkArgument(a < b, "a must be less than b");6        System.out.println("c = " + c);7    }8}9Recommended Posts: Java | checkArgument() method of Preconditions class10Java | checkNotNull() method of Preconditions class11Java | checkState() method of Preconditions class12Java | checkElementIndex() method of Preconditions class13Java | checkPositionIndex() method of Preconditions class14Java | checkPositionIndexes() method of Preconditions class15Java | checkIndex() method of Preconditions class16Java | checkPositionIndex() method of Preconditions class17Java | checkPositionIndexes() method of Preconditions class18Java | checkIndex() method of Preconditions class19Java | checkElementIndex() method of Preconditions class20Java | checkState() method of Preconditions class21Java | checkNotNull() method of Preconditions class

checkArgument

Using AI Code Generation

1import org.assertj.core.util.Preconditions;2public class 1 {3    public static void main(String[] args) {4        int a = 0;5        Preconditions.checkArgument(a > 0, "Value of a must be greater than zero");6    }7}

checkArgument

Using AI Code Generation

1package org.jnit.assertj;2import static org.assertj.core.util.Preconditions.*;3public class PreconditionsExample {4	public static void main(String[] args) {5		checkArgument(1 == 1, "this is not true");6	}7}8	at org.assertj.core.util.Preconditions.checkArgument(Preconditions.java:37)9	at org.jnit.assertj.PreconditionsExample.main(PreconditionsExample.java:8)10package org.jnit.assertj;11import static org.assertj.core.util.Preconditions.*;12public class PreconditionsExample {13	public static void main(String[] args) {14		checkNotNull(null, "this is null");15	}16}17	at org.assertj.core.util.Preconditions.checkNotNull(Preconditions.java:42)18	at org.jnit.assertj.PreconditionsExample.main(PreconditionsExample.java:8)19package org.jnit.assertj;20import static org.assertj.core.util.Preconditions.*;21public class PreconditionsExample {22	public static void main(String[] args) {23		checkState(1 == 2, "this is not true");24	}25}26	at org.assertj.core.util.Preconditions.checkState(Preconditions.java:47)27	at org.jnit.assertj.PreconditionsExample.main(PreconditionsExample.java:8)

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