publicstaticbooleanisArrayByte(Objectobject){if(object==null){returnfalse;// 检查对象是否为null}if(!object.getClass().isArray()){returnfalse;// 判断对象是否为数组}if(object.getClass().getComponentType()!=byte.class){returnfalse;// 判断数组的类型是否为byte}returntrue;// 如果所有条件都满足,...
/*** Determine whether the given object is an array: * either an Object array or a primitive array. *@paramobj the object to check*/publicstaticbooleanisArray(Object obj) {return(obj !=null&&obj.getClass().isArray()); } /*** Determine whether the given array is empty: * i.e. {...
*/publicstaticbooleanisArray(Object obj){if(null==obj){// throw new NullPointerException("Object check for isArray is null");returnfalse;}// 反射 获得类型returnobj.getClass().isArray();}
check(arr, toCheckValue); } } 运行结果: Array: [5, 1, 1, 9, 7, 2, 6, 10] Is 7 present in the array: true 2)使用 List.contains() 方法 Java 中的 List contains() 方法用于检查指定元素是否存在于给定列表中。 public boolean contains(Object) 示例代码: import java.util.Arrays; public...
if语句是最基本的条件控制结构,它根据布尔表达式的值(true或false)来决定是否执行某段代码。 2.1.1 基本if结构 如果条件为真,则执行if块内的语句。 // 语法 if(booleanExpression) { // statements executed if booleanExpression is...
Assert.isTrue(Object object,"object must be true")-对象必须为trueAssert.notEmpty(Collection collection,"collection must not be empty")-集合非空 Assert.hasLength(String text,"text must be specified")-字符不为null且字符长度不为0Assert.hasText(String text,"text must not be empty")-text 不为nu...
ArrayTrailingComma 检查数组初始化是否以逗号结束。 AvoidInlineConditionals 检查inline的条件操作。 CovariantEquals 检查类是否覆盖了equals(java.lang.Object)。 DoubleCheckedLocking 检查DCL的问题。 EmptyStatement 检查空的代码段。
If an ArgumentIndex value is equal to or exceeds the upper limit, an IllegalArgumentException will now be thrown by MessageFormats constructors applyPattern(String pattern) instance method format(String pattern, Object... arguments) static method De-serializing a MessageFormat object with an Argument...
options = os::strdup_check_oom(pos +1, mtArguments); }#if!INCLUDE_JVMTIif(valid_jdwp_agent(name, is_absolute_path)) { jio_fprintf(defaultStream::error_stream(),"Debugging agents are not supported in this VM\n");returnJNI_ERR; ...
To check the nested array’s equality, we must use thedeepEquals()API. It is important to note thatdeepEquals()only works with object types, sodeepEquals()cannot be used with primitive arrays,but we can use it for any simple or nested arrays. ...