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Diffstat (limited to 'src/main/java/org/junit/internal/Checks.java')
-rw-r--r-- | src/main/java/org/junit/internal/Checks.java | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/main/java/org/junit/internal/Checks.java b/src/main/java/org/junit/internal/Checks.java new file mode 100644 index 0000000..9724947 --- /dev/null +++ b/src/main/java/org/junit/internal/Checks.java @@ -0,0 +1,37 @@ +package org.junit.internal; + +/** @since 4.13 */ +public final class Checks { + + private Checks() {} + + /** + * 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 {@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; + } +} |