override equals in Java equals()(javadoc) must define an equality relation (it must bereflexive,symmetric, andtransitive). In addition, it must beconsistent(if the objects are not modified, then it must keep returning the same value). Furthermore,o.equals(null)must always return false. hashCo...
}if( !super.equals( o ) ) {returnfalse; } MyClass that = ( MyClass ) o;returnthis.var1.equals( that.var1 ) &&this.var2.equals( that.var2 ); } ... } 相当标准。事实上,它遵循Java最佳实践。在以后的生活中,我在另一个sub-package类(我的控制器类)中有这个: ...package com.a.b....
1.You must override hashCode in every class that overrides equals. 如果一个类实现了equals方法却没有实现hashCode方法,那么将这个对象A放入HashMap中,然后new一个与A相等的对象B,在HashMap中查找B,返回值将是null,因为没有实现hashCode方法,导致相等的两个对象返回的hash值不同(因为A==B为false)。 2.JavaSE...
函数<init>,则返回 false */if(class_flags.is_interface()){// Interfaces do not use vtables, except for java.lang.Object methods,// so there is no point to assigning// a vtable index to any of their local methods. If we refrain from doing this,// we can use Method::_vtable_index...
@Overridepublicbooleanequals(Object obj){returntrue; } Because of how easy it’s to accidentally overload,it’s a common recommendation to use the@Overrideannotation on all inherited methods. 3. Conclusion In this guide, we saw how the @Override annotation works in Java. ...
顺便说,overload指同名方法,通过不同的参数样式共存, 有时用这个, 有时用那个。参数样式指,不同的参数类型,不同的参数个数,不同的参数顺序,返回值不起作用。再顺便说,比较权威公开的著作,都支持overwrite在java中不 存在的说法。我们看看下面的一个实用的例子。此例子证明,compiler(编译器)一定是按照先子类,后...
Equals(Object) Indicates whether some other object is "equal to" this one. (Inherited from Object) GetHashCode() Returns a hash code value for the object. (Inherited from Object) JavaFinalize() Called by the garbage collector on an object when garbage collection determines that there...
findAndAddClassesInPackageByFile(packageName, filePath, recursive, classes); } else if ("jar".equals(protocol)) { // 如果是jar包文件 // 定义一个JarFile // System.err.println("jar类型的扫描"); JarFile jar; try { // 获取jar
toString in class Object Returns: A string representation of this object. See Also: Object.toString() equals public boolean equals(Object obj) Overrides: equals in class Object hashCode public int hashCode() Overrides: hashCode in class Object clone public EcsTaskOverride clone() Overrides: clone ...
toString in class Object Returns: A string representation of this object. See Also: Object.toString() equals public boolean equals(Object obj) Overrides: equals in class Object hashCode public int hashCode() Overrides: hashCode in class Object clone public PreviewOverride clone() Overrides: clone ...