Example usage for java.lang IllegalArgumentException IllegalArgumentException

Introduction

In this page you can find the example usage for java.lang IllegalArgumentException IllegalArgumentException.

Prototype

public IllegalArgumentException(Throwable cause)

Source Link

Document

Constructs a new exception with the specified cause and a detail message of (cause==null ?

Usage

From source file:Main.java

public static String utf8Encoding(String value, String sourceCharsetName) {
    try {/*from   w  ww.  jav a  2  s . c o m*/
        return new String(value.getBytes(sourceCharsetName), UTF_8);
    } catch (UnsupportedEncodingException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

@SafeVarargs
public static <T> Map<T, T> createMap(T... array) {
    if (array == null || array.length == 0) {
        return null;
    }/*from   w  w w  .  j  av  a2  s .  c om*/
    if (array.length % 2 != 0) {
        throw new IllegalArgumentException("Array size must be even number.");
    }
    Map<T, T> map = new LinkedHashMap<T, T>();
    for (int i = 0; i < array.length; i += 2) {
        map.put(array[i], array[i + 1]);
    }
    return map;
}

From source file:Main.java

/**
 * Compute edit distance between two strings = Levenshtein distance *
 *//*from   w w w .ja  v  a 2s.co  m*/
public static int getLevenshteinDistance(final String s, final String t) {
    if (s == null || t == null) {
        throw new IllegalArgumentException("Strings must not be null");
    }

    final int n = s.length(); // length of s
    final int m = t.length(); // length of t

    if (n == 0) {
        return m;
    } else if (m == 0) {
        return n;
    }

    int p[] = new int[n + 1]; //'previous' cost array, horizontally
    int d[] = new int[n + 1]; // cost array, horizontally
    int _d[]; //placeholder to assist in swapping p and d

    // indexes into strings s and t
    int i; // iterates through s
    int j; // iterates through t
    char t_j; // jth character of t
    int cost; // cost
    for (i = 0; i <= n; i++) {
        p[i] = i;
    }
    for (j = 1; j <= m; j++) {
        t_j = t.charAt(j - 1);
        d[0] = j;
        for (i = 1; i <= n; i++) {
            cost = s.charAt(i - 1) == t_j ? 0 : 1;
            // minimum of cell to the left+1, to the top+1, diagonally left and up +cost
            d[i] = Math.min(Math.min(d[i - 1] + 1, p[i] + 1), p[i - 1] + cost);
        }
        // copy current distance counts to 'previous row' distance counts
        _d = p;
        p = d;
        d = _d;
    }

    // our last action in the above loop was to switch d and p, so p now
    // actually has the most recent cost counts
    return p[n];
}

From source file:Main.java

public static void assertAllDifferent(List<?> entities) {

    Set<?> set = new LinkedHashSet<>(entities);

    if (set.size() != entities.size()) {
        throw new IllegalArgumentException("All entities must be different: " + entities + ", " + set);
    }//from  w w w .  j  av a2s .  c om

}

From source file:Main.java

public static String truncate(String str, int byteLength) {
    if (str == null) {
        return null;
    }/* w w w.j a va 2  s .  c o m*/
    if (str.length() == 0) {
        return str;
    }
    if (byteLength < 0) {
        throw new IllegalArgumentException("Parameter byteLength must be great than 0");
    }
    int i = 0;
    int len = 0;
    int leng = 0;
    char[] chs = str.toCharArray();
    try {
        leng = str.getBytes("gbk").length;

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    if (leng <= byteLength)
        return str;
    while ((len < byteLength) && (i < leng)) {
        len = (chs[i++] > 0xff) ? (len + 2) : (len + 1);
    }

    if (len > byteLength) {
        i--;
    }
    return new String(chs, 0, i) + "...";
}

From source file:Main.java

public static long toLong(byte[] array) {
    if (array.length < 8)
        throw new IllegalArgumentException("Byte array requires 4 bytes.");
    long nonce = array[7];
    for (int i = 6; i >= 0; i--) {
        nonce = nonce << 8 | array[i] & 0xFF;
    }/*from   w ww  .j a  v a2  s . co  m*/

    return nonce;
}

From source file:Main.java

public static Collection asTargetTypeCollection(Collection c, Class targetCollectionClass) {
    if (targetCollectionClass == null)
        throw new IllegalArgumentException("'targetCollectionClass' must be not null");
    if (c == null)
        return null;
    if (targetCollectionClass.isInstance(c))
        return c;

    Collection result = null;//from   w w  w . j  a v a2  s.  co  m

    try {
        result = (Collection) targetCollectionClass.newInstance();
    } catch (Exception e) {
        throw new IllegalArgumentException(
                "targetCollectionClass=" + targetCollectionClass.getName() + " is not correct!", e);
    }

    result.addAll(c);
    return result;
}

From source file:Main.java

/**
 * Get the value of color with specified alpha.
 *
 * @param color/*from  w w  w.  j a v a2  s  . co m*/
 * @param alpha between 0 to 255.
 * @return Return the color with specified alpha.
 */
public static int getColorAtAlpha(int color, int alpha) {
    if (alpha < 0 || alpha > 255) {
        throw new IllegalArgumentException("The alpha should be 0 - 255.");
    }
    return Color.argb(alpha, Color.red(color), Color.green(color), Color.blue(color));
}

From source file:Main.java

public static String getResourceString(String name, Context context) {
    int nameResourceID = context.getResources().getIdentifier(name, "string",
            context.getApplicationInfo().packageName);
    if (nameResourceID == 0) {
        throw new IllegalArgumentException("No resource string found with name " + name);
    } else {/*w w  w .jav  a  2  s  . c  om*/
        return context.getString(nameResourceID);
    }
}

From source file:Main.java

public static double divide(double v1, double v2, int scale) {
    if (scale < 0) {
        throw new IllegalArgumentException("The scale must be a positive integer or zero");
    }//from   w w  w  .ja  va 2s . co  m
    BigDecimal b = new BigDecimal(Double.toString(v1));
    BigDecimal one = new BigDecimal(v2);
    return b.divide(one, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}