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[] shift(String[] array, int n) {
    if (n <= 0) {
        throw new IllegalArgumentException("n must a non-negative number.");
    }/*from w  w w  . j  a va2  s. c  o  m*/

    if (n >= array.length) {
        return new String[0];
    }

    String[] dest = new String[array.length - n];
    System.arraycopy(array, n, dest, 0, array.length - n);
    return dest;
}

From source file:Main.java

public static int byteArrayToUint32(byte[] src, int offset) throws IllegalArgumentException {
    int mask = 0xff;
    int temp = 0;
    int dest = 0;

    if (src.length < 4 + offset) {
        throw new IllegalArgumentException(
                "Failed to translate " + src.length + " bytes to uint32 with " + offset + " offset");
    }/*  www  . j a  va 2 s  . c  o  m*/

    for (int i = 0; i < 4; i++) {
        dest <<= 8;
        temp = src[offset + 3 - i] & mask;
        dest |= temp;
    }

    return dest;
}

From source file:Main.java

private static void checkByteOrderLittleEndian(final ByteBuffer buffer) {
    if (buffer.order() != ByteOrder.LITTLE_ENDIAN) {
        throw new IllegalArgumentException("ByteBuffer byte order must be little endian");
    }//  w w w .j  a v a2 s  . co  m
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static void notEmpty(Object obj, String message) {
    if (obj == null) {
        throw new IllegalArgumentException(message + " must be specified");
    }//from  w w w . j  a  v  a 2  s  .co m
    if (obj instanceof String && obj.toString().trim().length() == 0) {
        throw new IllegalArgumentException(message + " must be specified");
    }
    if (obj.getClass().isArray() && Array.getLength(obj) == 0) {
        throw new IllegalArgumentException(message + " must be specified");
    }
    if (obj instanceof Collection && ((Collection) obj).isEmpty()) {
        throw new IllegalArgumentException(message + " must be specified");
    }
    if (obj instanceof Map && ((Map) obj).isEmpty()) {
        throw new IllegalArgumentException(message + " must be specified");
    }
}

From source file:Main.java

/**
 * Throws an {@link java.lang.IllegalArgumentException} if called on the main thread.
 *///from ww  w. j  a v  a  2 s  .  c o m
public static void assertBackgroundThread() {
    if (!isOnBackgroundThread()) {
        throw new IllegalArgumentException("You must call this method on a background thread");
    }
}

From source file:Main.java

public static <InstanceType> InstanceType instantiate(Class<InstanceType> cls) throws IllegalArgumentException {
    try {/* w  w w . j a v a  2  s.c  om*/
        return cls.newInstance();
    } catch (Exception e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

public static int byteArrayToInt(byte[] bytes) throws IllegalArgumentException {
    if (bytes.length != (Integer.SIZE / Byte.SIZE)) {
        throw new IllegalArgumentException("Incorrect array size to convert to an int");
    }//from   w  w  w  .  ja  v a  2  s.c  o m
    ByteBuffer buffer = ByteBuffer.wrap(bytes);
    buffer.order(ByteOrder.BIG_ENDIAN);
    return buffer.getInt();
}

From source file:Main.java

public static int byteArrayToIntLE(byte[] bytes) throws IllegalArgumentException {
    if (bytes.length != (Integer.SIZE / Byte.SIZE)) {
        throw new IllegalArgumentException("Incorrect array size to convert to an int");
    }/*from  ww  w  . ja va  2s  . c  o  m*/
    ByteBuffer buffer = ByteBuffer.wrap(bytes);
    buffer.order(ByteOrder.LITTLE_ENDIAN);
    return buffer.getInt();
}

From source file:Main.java

public static String getFileMd5String(File file) {
    if (!file.isFile())
        throw new IllegalArgumentException("only file can calculate MD5 value!");

    MessageDigest digest;/*from w  ww.jav a  2s  .c  om*/
    FileInputStream in = null;
    byte buffer[] = new byte[8192];
    int len;
    try {
        digest = MessageDigest.getInstance("MD5");
        in = new FileInputStream(file);
        while ((len = in.read(buffer)) != -1) {
            digest.update(buffer, 0, len);
        }
        BigInteger bigInt = new BigInteger(1, digest.digest());
        return bigInt.toString(16);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    } finally {
        try {
            if (in != null)
                in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

From source file:Main.java

public static String urlencode(String[] params) {
    if (params.length % 2 != 0) {
        throw new IllegalArgumentException("Params must have an even number of elements.");
    }//w w w  .  java  2  s  .com

    String result = "";
    try {
        boolean firstTime = true;
        for (int i = 0; i < params.length; i += 2) {
            if (params[i + 1] != null) {
                if (firstTime) {
                    firstTime = false;
                } else {
                    result += "&";
                }
                result += URLEncoder.encode(params[i], "UTF-8") + "="
                        + URLEncoder.encode(params[i + 1], "UTF-8");
            }
        }
        result.replace("*", "%2A");
    } catch (UnsupportedEncodingException e) {
        return null;
    }

    return result;
}