您可以在Eclipse中创建各种Java代码模板

窗口>首选项> Java >编辑器>模板

e.g.

Sysout扩展为:

System.out.println(${word_selection}${});${cursor}

您可以通过输入sysout加上CTRL+SPACE来激活它

您目前使用哪些有用的Java代码模板?包括它的名称和描述,以及为什么它很棒。

我正在寻找一个模板的原始/新颖的使用,而不是一个内置的现有功能。

创建Log4J日志记录器 从显示中获取swt颜色 Syncexec - Eclipse框架 单例模式/Enum单例生成 Readfile 常量 Traceout 格式字符串 注释代码审查 字符串格式 尝试最终锁定 消息格式i18n和log Equalsbuilder Hashcodebuilder Spring对象注入 创建FileOutputStream


当前回答

下面是一个非实例化类的构造函数:

// Suppress default constructor for noninstantiability
@SuppressWarnings("unused")
private ${enclosing_type}() {
    throw new AssertionError();
}

这个是针对自定义异常的:

/**
 * ${cursor}TODO Auto-generated Exception
 */
public class ${Name}Exception extends Exception {
    /**
     * TODO Auto-generated Default Serial Version UID
     */
    private static final long serialVersionUID = 1L;    

    /**
     * @see Exception#Exception()
     */
    public ${Name}Exception() {
        super();
    }

    /**
     * @see Exception#Exception(String) 
     */
    public ${Name}Exception(String message) {
        super(message);         
    }

    /**
     * @see Exception#Exception(Throwable)
     */
    public ${Name}Exception(Throwable cause) {
        super(cause);           
    }

    /**
     * @see Exception#Exception(String, Throwable)
     */
    public ${Name}Exception(String message, Throwable cause) {
        super(message, cause);
    }
}

其他回答

使用Mockito创建一个mock(在“Java语句”上下文中):

${:importStatic('org.mockito.Mockito.mock')}${Type} ${mockName} = mock(${Type}.class);

在“Java类型成员”中:

${:import(org.mockito.Mock)}@Mock
${Type} ${mockName};

模拟void方法抛出异常:

${:import(org.mockito.invocation.InvocationOnMock,org.mockito.stubbing.Answer)}
doThrow(${RuntimeException}.class).when(${mock:localVar}).${mockedMethod}(${args});

模拟一个void方法来做一些事情:

${:import(org.mockito.invocation.InvocationOnMock,org.mockito.stubbing.Answer)}doAnswer(new Answer<Object>() {
public Object answer(InvocationOnMock invocation) throws Throwable {
    Object arg1 = invocation.getArguments()[0];
    return null;
}
}).when(${mock:localVar}).${mockedMethod}(${args});

验证被模拟的方法被精确地调用一次:

${:importStatic(org.mockito.Mockito.verify,org.mockito.Mockito.times)}
verify(${mock:localVar}, times(1)).${mockMethod}(${args});

验证mock方法从未被调用:

${:importStatic(org.mockito.Mockito.verify,org.mockito.Mockito.never)}verify(${mock:localVar}, never()).${mockMethod}(${args});

使用谷歌Guava的新链表(hashset和hashmap也类似):

${import:import(java.util.List,com.google.common.collect.Lists)}List<${T}> ${newName} = Lists.newLinkedList();

我还使用了一个生成Test类的巨大模板。下面是一个简短的片段,每个感兴趣的人都应该定制:

package ${enclosing_package};

import org.junit.*;
import static org.junit.Assert.*;
import static org.hamcrest.Matchers.*;
import static org.mockito.Matchers.*;
import static org.mockito.Mockito.*;
import org.mockito.Mockito;
import org.slf4j.Logger;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.junit.runner.RunWith;

// TODO autogenerated test stub
@RunWith(MockitoJUnitRunner.class)
public class ${primary_type_name} {

    @InjectMocks
    protected ${testedType} ${testedInstance};
    ${cursor}

    @Mock
    protected Logger logger;

    @Before
    public void setup() throws Exception {
    }

    @Test
    public void shouldXXX() throws Exception {
        // given

        // when
        // TODO autogenerated method stub

        // then
        fail("Not implemented.");
    }
}
// Here goes mockito+junit cheetsheet

slf4j日志

${imp:import(org.slf4j.Logger,org.slf4j.LoggerFactory)}

private static final Logger LOGGER = LoggerFactory
    .getLogger(${enclosing_type}.class);

插入测试方法时应给出

我最近在与一个非常优秀的开发人员和朋友结对编程时看到了一个类似的版本,我认为它可以成为这个列表的一个很好的补充。

This template will create a new test method on a class, following the Given - When - Then approach from the behavior-driven development (BDD) paradigm on the comments, as a guide for structuring the code. It will start the method name with "should" and let you replace the rest of the dummy method name "CheckThisAndThat" with the best possible description of the test method responsibility. After filling the name, TAB will take you straight to the // Given section, so you can start typing your preconditions.

我把它映射到三个字母“tst”,描述为“测试方法应该在什么时候给出”;)

我希望你能像我看到它时一样觉得它很有用:

@Test
public void should${CheckThisAndThat}() {
    Assert.fail("Not yet implemented");
    // Given
    ${cursor}

    // When


    // Then

}${:import(org.junit.Test, org.junit.Assert)}

strf ->字符串。Format ("msg", args)非常简单,但节省了一些输入。

String.format("${cursor}",)

我使用以下模板进行Android开发:

详细(日志)

Log.v(TAG, ${word_selection}${});${cursor}

调试(Logd)

Log.d(TAG, ${word_selection}${});${cursor}

(信息的人类学)

Log.i(TAG, ${word_selection}${});${cursor}

Warn (Logw)

Log.w(TAG, ${word_selection}${});${cursor}

错误(包厢)

Log.e(TAG, ${word_selection}${});${cursor}

Assert (Loga)

Log.a(TAG, ${word_selection}${});${cursor}

TAG是我在每个活动中定义的常量。