Example usage for java.lang NullPointerException NullPointerException

Introduction

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

Prototype

public NullPointerException()

Source Link

Document

Constructs a NullPointerException with no detail message.

Usage

From source file:Main.java

public static void main(String[] args) {
    Thread thread = new Thread() {
        public void run() {
            throw new NullPointerException();
        }//  w  w w.  j a  va  2s  . c  o  m
    };
    thread.setUncaughtExceptionHandler(new UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread arg0, Throwable arg1) {
            arg1.printStackTrace();
        }
    });
    thread.start();
}

From source file:Main.java

public static <T> T checkNotNull(T obj) {
    if (obj == null)
        throw new NullPointerException();

    return obj;//  ww  w.ja  v a2 s.c om
}

From source file:Main.java

private static <T> void checkParam(T param) {
    if (param == null) {
        throw new NullPointerException();
    }//from w  ww  .ja  v  a2s  .  com
}

From source file:Main.java

public static byte[] unicode(String s) {
    if (s == null) {
        throw new NullPointerException();
    }/*w  w  w. j  a  va2 s . c o  m*/

    int len = s.length();
    byte[] ret = new byte[len * 2];
    int a, b, c;
    for (int i = 0; i < len; i++) {
        c = s.charAt(i);
        a = c >> 8;// high bits
        b = c & 0xFF;// low bits
        if (a < 0) {
            a += 0xFF;
        }
        if (b < 0) {
            b += 0xFF;
        }
        ret[i * 2] = (byte) b;
        ret[i * 2 + 1] = (byte) a;
    }
    return ret;
}

From source file:Main.java

public static String authEncode(String src) {
    if (TextUtils.isEmpty(src)) {
        throw new NullPointerException();
    }//from  w w w . j ava 2 s  .co m
    byte[] buf = src.getBytes();
    for (int i = 0; i < buf.length; i++) {
        buf[i] ^= (i + 0x40);
    }
    return new String(buf);
}

From source file:Main.java

public static <T> T checkNotNull(T reference) {
    if (reference == null) {
        throw new NullPointerException();
    } else {//from   w  w w . j  a  v  a  2  s  . co m
        return reference;
    }
}

From source file:Main.java

public static int Cardinality(Object obj, Collection coll) {
    if (coll == null) {
        throw new NullPointerException();
    }//from   www  . j  av  a  2  s. c  om
    if (obj == null) {
        throw new NullPointerException();
    }
    for (Object o : coll) {
        if (o.equals(obj)) {
            total++;
        }
    }
    return total;
}

From source file:Main.java

public static String getTextContent(Node node) {

    if (node == null)
        throw new NullPointerException();

    String textContent;/*from   w  w  w  .  ja  va2  s  .  com*/

    textContent = node.getTextContent();
    if (textContent != null)
        return xmlDecode(textContent);

    NodeList childNodes = node.getChildNodes();
    if (childNodes.getLength() > 0 && childNodes.item(0) instanceof Text)
        textContent = node.getNodeValue();
    if (textContent != null)
        return xmlDecode(textContent);

    return "";
}

From source file:Main.java

public static <T1 extends Comparable<T2>, T2> int binarySearch(final List<T2> lst, final T1 elem) {
    if (lst == null || elem == null)
        throw new NullPointerException();

    int low = 0;/*from  w w w  .  ja  v a 2s. co m*/
    int high = lst.size() - 1;

    while (low <= high) {
        final int mid = low + (high - low) / 2;

        final T2 testElem = lst.get(mid);
        final int comparison = elem.compareTo(testElem);

        if (comparison == 0)
            return mid;
        if (comparison > 0) {
            low = mid + 1;
        } else {
            high = mid - 1;
        }
    }

    return -(low + 1);
}

From source file:Main.java

public static Activity getCurActivity() {
    if (current_activity == null) {
        // not initialized
        throw new NullPointerException();
    }/*from   w w w  . j  ava 2 s  .  co m*/
    return current_activity;
}