[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4umcCaTDluDSUhEfK_87aIXdEdQdoksRH1nem7W-GyM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-03-14 13:58:35",179140618,[8,9,10,11],"this.t()可以用t()代替","this.i可以用i代替","必须在System.out.println("Default constructor")之前调用this(1)","this(1) 必须替换为this(1.0)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},101,"6cf6c5df071041625b1b8b58df9c25f5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6884536a76377921d52baf2f6464bbf6.png","Java程序设计","32a616626ae34ccfaac9d572e94e2d2b","多选题","分析以下代码:class Test { private double i; public Test(double i) { this.t(); this.i = i; } public Test() { System.out.println("Default constructor"); this(1); } public void t() { System.out.println("Invoking t"); }}",[21,33,41,50,59,68,71,81,90,99],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-03-14 13:58:34",179140613,[26,27,28,29],"如果类中没有显式声明构造方法,则会自动提供默认构造函数","必须始终显式定义至少一个构造方法","每个类都有一个默认构造方法","默认构造函数是无参数构造方法","以下哪项陈述是正确的","v1",1,{"answer":34,"createTime":23,"id":35,"options":36,"question":30,"source":31,"type":32},[],179140614,[37,38,39,40],"一个类中可以定义多个构造方法","构造方法没有返回值类型,甚至连void也没有","构造方法必须与类本身同名","在创建对象时使用new运算符调用构造方法",{"answer":42,"createTime":23,"id":43,"options":44,"question":49,"source":31,"type":32},[],179140615,[45,46,47,48],"程序有编译错误,因为类a不是公共类","程序有编译错误,因为类a没有默认构造函数","该程序编译运行良好,没有打印任何内容","如果将A a = new A()更改为A a = new A("5"),程序将编译并运行","分析以下代码:public class Test { public static void main(String[] args) { A a = new A(); a.print(); }}class A { String s; A(String s) { this.s = s; } void print() { System.out.println(s); }}",{"answer":51,"createTime":5,"id":52,"options":53,"question":30,"source":31,"type":32},[],179140616,[54,55,56,57,58],"局部变量没有默认值","数据域具有默认值","基本类型的变量包含基本类型的值","引用类型的变量保存对对象存储在内存中的位置的引用","可以将int值赋给引用变量",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":31,"type":32},[],179140617,[63,64,65,66],"引用变量是一个对象","引用变量引用对象","类中的数据域必须是基本类型","类中的数据域可以是对象类型","下列哪项陈述是正确的",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":80,"source":31,"type":32},[],179140619,[75,76,77,78,79],"'x'","120","120.0",""x"",""120"","int变量可以保存__________",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":31,"type":32},[],179140620,[85,86,87,88],"char c = 'd'","char c = 100","char c = "d"","char c = "100"","下列变量定义语句正确的是__________",{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":31,"type":32},[],179140621,[94,95,96,97],"String s3 = s1 - s2","boolean b = s1.compareTo(s2)","char c = s1[0]","char c = s1.charAt(s1.length())","假设s1和s2是两个字符串.下列哪个语句或表达式不正确",{"answer":100,"createTime":5,"id":101,"options":102,"question":108,"source":31,"type":32},[],179140622,[103,104,105,106,107],""peter".compareToIgnoreCase("Peter")",""peter".compareToIgnoreCase("peter")",""peter".equalsIgnoreCase("Peter")",""peter".equalsIgnoreCase("peter")",""peter".equals("peter")","以下表达式的计算结果为true的是__________"]