1 package org.junit; 2 3 import java.lang.annotation.ElementType; 4 import java.lang.annotation.Retention; 5 import java.lang.annotation.RetentionPolicy; 6 import java.lang.annotation.Target; 7 8 /** 9 * When writing tests, it is common to find that several tests need similar 10 * objects created before they can run. Annotating a <code>public void</code> method 11 * with <code>@Before</code> causes that method to be run before the {@link org.junit.Test} method. 12 * The <code>@Before</code> methods of superclasses will be run before those of the current class, 13 * unless they are overridden in the current class. No other ordering is defined. 14 * <p> 15 * Here is a simple example: 16 * <pre> 17 * public class Example { 18 * List empty; 19 * @Before public void initialize() { 20 * empty= new ArrayList(); 21 * } 22 * @Test public void size() { 23 * ... 24 * } 25 * @Test public void remove() { 26 * ... 27 * } 28 * } 29 * </pre> 30 * 31 * @see org.junit.BeforeClass 32 * @see org.junit.After 33 * @since 4.0 34 */ 35 @Retention(RetentionPolicy.RUNTIME) 36 @Target(ElementType.METHOD) 37 public @interface Before { 38 } 39 40