Constants in Java are: O Words that are reserved for use by the Java language O Symbolic names made up by the programmer that refer to some memory location O Operators that perform some function on one or more operands O Symbolic names made up by the programmer to refer to a location in memory and which, once created, contain values which cannot be changed

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Constants in Java are:
Words that are reserved for use by the Java language
Symbolic names made up by the programmer that refer to some memory location
Operators that perform some function on one or more operands
Symbolic names made up by the programmer to refer to a location in memory and which, once created, contain values which cannot be changed
O000
Transcribed Image Text:Constants in Java are: Words that are reserved for use by the Java language Symbolic names made up by the programmer that refer to some memory location Operators that perform some function on one or more operands Symbolic names made up by the programmer to refer to a location in memory and which, once created, contain values which cannot be changed O000
Why does the following code fail to compile?
String instructor = "Chris jones";
instructor.charAt(6) = 'J';
It should be instructor[6] = J';
You can't modify individual characters in a String.
You can't read string elements by index.
It should be instructor.set(6, 'T);
Transcribed Image Text:Why does the following code fail to compile? String instructor = "Chris jones"; instructor.charAt(6) = 'J'; It should be instructor[6] = J'; You can't modify individual characters in a String. You can't read string elements by index. It should be instructor.set(6, 'T);
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