Java Articles - Page 690 of 745

No. It is not allowed in Java. The compiler will fail the compilation throwing error that the blank final field may not have been initialized.

No. It is not allowed in Java. The compiler will fail the compilation throwing error that the blank final field may not have been initialized.

this can be used to get the current object.this can be used to invoke current object's method.this() can be used to invoke current class constructorthis can be passed as a parameter to a method call.this can be passed as a parameter to a constructor.this can be used to return the current object from the method.

this can be used to get the current object.this can be used to invoke current object's method.this() can be used to invoke current class constructorthis can be passed as a parameter to a method call.this can be passed as a parameter to a constructor.this can be used to return the current object from the method.

Java is a statically typed, object-oriented programming language that needs a main method as an entry point for running. But it is possible to develop Java programs without a main method under certain conditions. Different Approaches The following are the different approaches for creating a program without a main method in Java − Using Static Blocks Using a Servlet Using a JavaFX Application Using Static Blocks (Before Java 7) In previous implementations of Java (prior to Java 7), a program was possible to run with a ... Read More

Java is a statically typed, object-oriented programming language that needs a main method as an entry point for running. But it is possible to develop Java programs without a main method under certain conditions. Different Approaches The following are the different approaches for creating a program without a main method in Java − Using Static Blocks Using a Servlet Using a JavaFX Application Using Static Blocks (Before Java 7) In previous implementations of Java (prior to Java 7), a program was possible to run with a ... Read More

No. Java constructor cannot return a value. If required, just create a method which calls the required constructor and returns the required value. See the example below.public class Tester {    public Tester(){}    public static Tester getInstance(){       Tester tester = new Tester();        return tester;    } }

No. Java constructor cannot return a value. If required, just create a method which calls the required constructor and returns the required value. See the example below.public class Tester {    public Tester(){}    public static Tester getInstance(){       Tester tester = new Tester();        return tester;    } }

No. Java constructor cannot return a value. If required, just create a method which calls the required constructor and returns the required value. See the example below.public class Tester {    public Tester(){}    public static Tester getInstance(){       Tester tester = new Tester();        return tester;    } }

For two given matrix each of size m×n, write a Java program to subtract them. The matrix has a row and column arrangement of its elements. A matrix with m rows and n columns can be called as m×n matrix. Individual entries in the matrix are called element and can be represented by a[i][j] which means that the element a is present at the ith row and jth column. Note that two matrix can be subtracted if and only if the number of rows and columns of each matrix are equal. Now, let's understand the problem statement with an example ... Read More