package org.junit.internal;

Since:
4.13/** @since 4.13 */
public final class Checks {

    private Checks() {}

    
Checks that the given value is not null. 
Params:
value – object reference to check
Throws:
NullPointerException – if value is null
Returns:
the passed-in value, if not null/**
     * Checks that the given value is not {@code null}.
     *
     * @param value object reference to check
     * @return the passed-in value, if not {@code null}
     * @throws NullPointerException if {@code value} is {@code null}
     */
    public static <T> T notNull(T value) {
        if (value == null) {
            throw new NullPointerException();
        }
        return value;
    }

    
Checks that the given value is not null, using the given message as the exception message if an exception is thrown. 
Params:
value – object reference to check
message – message to use if value is null
Throws:
NullPointerException – if value is null
Returns:
the passed-in value, if not null/**
     * Checks that the given value is not {@code null}, using the given message
     * as the exception message if an exception is thrown.
     *
     * @param value object reference to check
     * @param message message to use if {@code value} is {@code null}
     * @return the passed-in value, if not {@code null}
     * @throws NullPointerException if {@code value} is {@code null}
     */
    public static <T> T notNull(T value, String message) {
        if (value == null) {
            throw new NullPointerException(message);
        }
        return value;
    }
}