Chapter 4, Problem 6PE

Program Plan Intro

String class:

• In Java, the string class is in the “java.lang.String” package and used to manipulate strings.
• The string class provides a lot of methods to handle the strings. The method allows operations like, trimming, concatenating, comparing and replacing of strings.
• Example of method provided by string class is,

  “toUpperCase()” – this method is used to convert the lowercase letters of a string to uppercase.

• The methods are accessed using an object of String class.

Program Plan Intro

“PrintStream” class:

• Java “PrintStream” class helps to write formatted data to an “OutputStream”.
• The “PrintStream” class can format data types like “long”, “int” as formatted text rather than their byte values.
• Two well known “Printstream” class instances are “System.out” and “System.err”.

Explanation of Solution

Two methods of “String” class that is not belong to “PrintStream” class:

length():

• The “length()” method is used to get the length of a string.
• The “length()” method has no arguments and it returns an integer value.
• Example:

  //using length() method

  int n=greetings.length();

  where “n” is the variable that will hold the length of the string variable “greetings”...

Explanation of Solution

Method of “PrintStream” class that not belong to “String” class:

println():

• The “println()” method is used to print the values.
• The “println()” method do not return any value...