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Explain Parentheses in Java ?
Sometimes the default sequence of evaluation isn't what you want. For example, the formula to change a Fahrenheit temperature to a Celsius temperature is C = (5/9) (F - 32) whereas C is degrees Celsius and F is degrees Fahrenheit. You must subtract 32 from the Fahrenheit temperature before you multiply by 5/9, not after. You can use parentheses to adjust the frequently much as they are used in the above formula. The further program prints a table presentation the conversions from Fahrenheit and Celsius between zero and three hundred degrees Fahrenheit every twenty degrees. // Print a Fahrenheit to Celsius table
class FahrToCelsius {
public static void main (String args[]) { // lower limit of temperature table double lower = 0.0;
// upper limit of temperature table double upper = 300.0;
// step size double step = 20.0; double fahr = lower; while (fahr <= upper) { double celsius = (5.0 / 9.0) * (fahr-32.0); System.out.println(fahr + " " + celsius); fahr = fahr + step; }
}
What should be public? What should be private? As a rule of thumb: Classes are public. Fields are private. Constructors are public. Getter and setter methods
implementation of DT in netbeans
short Java application that stores words in an Array or ArrayList.
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State the Verify phase of Java Program Development Before the bytecodes in an application are executed by the java interpreter, they are verified by the bytecode verifier in
What is the use of Wrapper class You can create an object of Wrapper class using a String or a primitive data type Integer num = new Integer (4); or Integer num = n
Class variables are named as static variables. There is only single occurrence of a class variable per JVM per class loader. When a class is operated the class variables are in
Explain System Colors in java 1.1? In Java 1.1, the java.awt.SystemColor class is a subclass of java.awt.Color that gives color constants in which match native component colors
Determine the phase Loading- Java Program Development In phase 3, the program must first be placed in memory before it can be executed. This is done by the class loader, whic
Debugging mode can be enabled by adding the following line of code before creating new connections: XMPPConnection.DEBUG_ENABLED = true; When debugging mode is enabled, a
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