1. Write a class called StringDemo. The class should.... a) use the JOptionPane to read in the sentence "I love learning

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1 Write A Class Called Stringdemo The Class Should A Use The Joptionpane To Read In The Sentence I Love Learning 1 (73.42 KiB) Viewed 32 times

1. Write a class called StringDemo. The class should.... a) use the JOptionPane to read in the sentence "I love learning Java Programming". Do not hard code it into your program. b) print the length of the input string using the length() method in the String class c) print the words "Java Programming" by using the substring() method with only one parameter d) replace the word "Java" with "C++" in the input string and print the result of this replacement e) use only the substring() and concat() methods in the String class to print out the sentence: Java Programming is to love learning The only two words you need to add are "is to". The other words need to be taken from substringing the input string. I. You may not use the concatenation operator'+'. 11- 2. Exercise Write a class called MathDemo which has only one method called main() In the main() method: a) use the abs() method in the Math class print the absolute value of -567/ 4.223 use the DecimalFormat class to format() your result. b) use the random() method in the Math class to print out 10 random numbers. Use a for loo