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(String s)

Source Link

Document

Constructs a NullPointerException with the specified detail message.

Usage

From source file:Main.java

public static <T> void fromArrayToCollection(T[] a, Collection<T> c) {
    if (c == null)
        throw new NullPointerException("Collection must be not null");
    for (T e : a) {
        c.add(e);//from w  w  w  .j  a  v  a  2 s  . com
    }
}

From source file:Main.java

public static void checkNull(String message, Object value) {
    if (value == null) {
        throw new NullPointerException(message + " should not be null");
    }/*from   w  w w. java  2s  . co m*/
}

From source file:Main.java

public static <T> T requireNonNull(T o, String message) {
    if (o == null) {
        throw new NullPointerException(message);
    }/* w w w.  j  a v  a  2s  .c o m*/
    return o;
}

From source file:Main.java

public static <T> T checkNotNull(T object, String message) {
    if (object == null)
        throw new NullPointerException(message);
    return object;
}

From source file:Main.java

public static boolean isValidIndex(JComboBox<?> comboBox, int index) {
    if (comboBox == null) {
        throw new NullPointerException("comboBox == null");
    }//from ww w.  j  a v  a2 s . c om
    int itemCount = comboBox.getItemCount();
    return index >= 0 && index < itemCount;
}

From source file:Main.java

public static void checkNullOrEmpty(String message, String value) {
    if (isEmpty(value)) {
        throw new NullPointerException(message + " should not be null or empty");
    }/*from   w w  w  .  j ava  2 s  .  c  o  m*/
}

From source file:Main.java

public static boolean isValidPass(EditText paramEditText) {
    if (paramEditText == null) {
        throw new NullPointerException("EditText can't null");
    }/* ww w .j  av a2s  .com*/
    return isValidPass(paramEditText.getText().toString());
}

From source file:Main.java

public static Context getInstance() {
    if (sContext == null) {
        throw new NullPointerException("the context is null,please init AppContextUtil in Application first.");
    }//w  ww  .j  a  v  a2  s.  co m
    return sContext;
}

From source file:Main.java

public static void checkNull() {
    if (matoContext == null) {
        throw new NullPointerException("context is null");
    }//  www  .  j  ava  2 s.c  om
}

From source file:Main.java

public static Context getInstance() {
    if (mContext == null) {
        throw new NullPointerException("context is null in appcontxtutils,please init");
    }/*from w  w w  .j  a  v a2 s.  c  om*/
    return mContext;

}