类Person中定义构造方法public Person(String name,int age){this.name=name;this.age=age}下列对此构造方法应用正确的是()
A. Person p=new Person();
B. Person p=Person(“zhangsan”);
C. Person p=new Person(“zhangsan”,20);
D. Person p=Person(zhangsan,20);
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public class StringDemo {public static void main(String[] args) {String stra="hello";String strb=new String("hello");String strc=strb;System.out.println(stra==strb);}}程序运行结果为()
public class StringDemo {public static void main(String[] args) {String stra="hello";String strb=new String("hello");String strc=strb;System.out.println(stra==strc);}}程序运行结果为()
public class StringDemo {public static void main(String[] args) {String stra="hello";String strb=new String("hello");String strc=strb;System.out.println(strb==strc);}}程序运行结果为()