Predicate<Boolean> nonNull = Objects::nonNull; Predicate<Boolean> isNull = Objects::isNull; System.out.println(nonNull.test(false)); //true System.out.println(isNull.test(false)); //false Predicate<String> isEm
args) throws BeansException { return doGetBean(name, requiredType, args, false); } @SuppressWarnings("unchecked") protected <T> T doGetBean( final String name, final Class<T> requiredType, final Object[] args, boolean typeCheckOnly) throws BeansException { final String beanName = transforme...
*@returnthe number of elements in this collection*/intsize();/*** Returns true if this collection contains no elements. * *@returntrue if this collection contains no elements*/booleanisEmpty();/*** Returns true if this collection contains the specified element. * More formally, returns true...
Java 基本数据类型的包装类型的大部分都用到了缓存机制来提升性能。 Byte,Short,Integer,Long这 4 种包装类默认创建了数值[-128,127]的相应类型的缓存数据,Character创建了数值在[0,127]范围的缓存数据,Boolean直接返回TrueorFalse。 Integer 缓存源码: public static Integer valueOf(int i) { if (i >= Intege...
The default constructor initializes instance variables with default values, which are 0 for numeric types (like int, float), false for boolean, and null for object references. Q3. How to explicitly define a default constructor in Java class?
}staticclassPersonUtil{publicstaticbooleancheckParam(){thrownewRuntimeException("check error"); } } } 总结 mock默认方法需要使用 spy 方法 mock静态方法需要添加如下依赖(版本必须为 3.4.0 及以上),不然会报错 Exception in thread"main"org.mockito.exceptions.base.MockitoException: ...
private boolean supportRefreshToken = false; private boolean reuseRefreshToken = true; private TokenStore tokenStore; private ClientDetailsService clientDetailsService; private TokenEnhancer accessTokenEnhancer; private AuthenticationManager authenticationManager; /** * Initialize these token services. If no ...
public void setParagraphAttributes(int offset, int length, AttributeSet s, boolean replace) 段落に属性を設定します。 このメソッドはスレッドセーフですが、ほとんどの Swing メソッドは違います。詳細は、「How to Use Threads」を参照してください。 定義: setParagraphAttributes、インタフェー...
toggleSortOrder(int),setSortKeys(java.util.List<? extends javax.swing.RowSorter.SortKey>) isSortable public boolean isSortable(int column) Returns true if the specified column is sortable; otherwise, false. Parameters: column- the column to check sorting for, in terms of the underlying model ...
> factory = (FactoryBean<?>) bean;boolean isEagerInit;if (System.getSecurityManager() != null && factory instanceof SmartFactoryBean) {isEagerInit = AccessController.doPrivileged((PrivilegedAction<Boolean>)((SmartFactoryBean<?>) factory)::isEagerInit,getAccessControlContext());}else {isEagerInit...