[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fqFL-AOWECYVbK73D5AG4j3DdPTrKKr5nC7XZAs05z18":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":17,"related":18,"source":24,"type":82},[],"2023-11-10 10:17:52",104836520,[8,9,10,11,12],"float f = 1F","float f = 1.0","float f = '1'","float f = "1"","float f = 1.0d",{"courseId":14,"courseImg":15,"courseName":16},"f5c2e0a02414fb257d5caa42261d61be","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F125c5dff4296bf954b76ee80c781785a.PNG","Java程序设计","哪两个是有效的float定义?Which two are valid declarations of a float? (Choose two.) A",[19,26,31,36,41,46,51,61,70,79],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],104836498,[],"Java语言采用双字节的 字符编码","v1",2,{"answer":27,"createTime":5,"id":28,"options":29,"question":30,"source":24,"type":25},[],104836500,[],"String s="127";将s转换为int的代码:int i= ,将s转换为double的代码:double d=",{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":24,"type":25},[],104836502,[],"补齐下面代码,输出要求小数总长度不限,保留两位小数;输出字符要求总场宽为5,右对齐;输出字符串按实际长度.System.out.printf("E= ,Pi= ,String= ,char= ", "HDCZYJ",Math.PI,Math.E,'A')",{"answer":37,"createTime":5,"id":38,"options":39,"question":40,"source":24,"type":25},[],104836504,[],"在Java中,小数默认为 ,如果要指定 类型请在小数后加F\u002Ff",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":24,"type":25},[],104836505,[],"从键盘上输入数据的代码如下:Scanner sc=new Scanner( );System.out.print("请输入一个整数、小数和字符串:");`int n=sc. ();\u002F\u002F输入一个整数double d=sc. ();\u002F\u002F输入一个小数String s=sc. ();\u002F\u002F输入一个字符串",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":24,"type":25},[],104836506,[],"int对应的包装类是 ,char对应的包装类是",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":24,"type":60},[],104836507,[55,56,57,58],"十六进制、十进制、八进制、二进制","二进制、十进制、八进制、十六进制","八进制、十进制、二进制、十六进制","十六进制、八进制、十进制、二进制","067、126、0b1001_1100_0011_1111、0x10F分别是",0,{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":24,"type":60},[],104836508,[65,66,67,68],"float,double,int,long","double,float,int,byte","byte,long,double,float","double,int,float,long","下列数据类型的精度由高到低的顺序是_______",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":24,"type":60},[],104836515,[74,75,76,77],"break","default","_object","a-class","下面,哪一个是有效的标识符(Which is a valid identifier)",{"answer":80,"createTime":5,"id":6,"options":81,"question":17,"source":24,"type":82},[],[8,9,10,11,12],1]