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Analyze the following code carefully. Please select the one that applies.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);  }}

Question

Analyze the following code carefully. Please select the one that applies.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);  }}

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Solution

The code you provided will not compile successfully. The reason is that you're trying to create an instance of class A using a no-argument constructor A a = new A(); but in your class definition, you have only defined a constructor that accepts a String argument A(String s).

To fix this issue, you can either provide a String when creating a new instance of A like A a = new A("some string"); or you can define a no-argument constructor in your class A like:

A() {
  this.s = "";
}

This way, you can create a new instance of A without providing a String.

This problem has been solved

Similar Questions

Analyze the following code carefully. Please select all that apply. 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);   } } Group of answer choicesThe program has a compile error because class A is not a public class.The program has a compile error because class A does not have a default constructor.The program compiles and runs fine and prints nothing.The program would compile and run if you change A a = new A() to A a = new A("5").

public class Test {    public void  m1(String arg1)  {        arg1="Test";    } public static void main(String[] args) {        Test test1= new Test();        String s= "Hello";        test1.m1(s);        System.out.println(s);  }}

Analyze the following code carefully. public class Test {   int x;   public Test(String t) {      System.out.println("Test");   }   public static void main(String[] args) {     Test test = new Test();     System.out.println(test.x);   } } Group of answer choicesThe program has a compile error because System.out.println method cannot be invoked from the constructor.The program has a compile error because x has not been initialized.The program has a compile error because you cannot create an object from the class that defines the object.The program has a compile error because Test does not have a default constructor.

public class Code { public static void main(String[] args) { method(null); } public static void method(Object o) { System.out.println("Object method"); } public static void method(String s) { System.out.println("String method"); }}

class A {A(String s){System.out.println(s);}}class B {static A s1=new A("s11");static{ s1 = new A("s12");}}class C extends B {static{ s3 = new A("s31"); }static A s3=new A("s32");}// what's the output?C c = new C();

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