Skip to content

Commit 7e5ef8d

Browse files
bxsullivan91bxsullivan91
committed
String Util
1 parent da8825c commit 7e5ef8d

1 file changed

Lines changed: 113 additions & 0 deletions

File tree

‎ch09/StringUtil.java‎

Lines changed: 113 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,113 @@
1+
public class StringUtil
2+
{
3+
public static void main(String[] args)
4+
{
5+
6+
String wordGiven = "goodbye";
7+
8+
String firstLetter = getFirstCharacter(wordGiven);
9+
System.out.println(firstLetter);
10+
11+
String lastLetter = getLastCharacter(wordGiven);
12+
System.out.println(lastLetter);
13+
14+
String firstTwo = getFirstTwoCharacters(wordGiven);
15+
System.out.println(firstTwo);
16+
17+
String lastTwo = getLastTwoCharacters(wordGiven);
18+
System.out.println(lastTwo);
19+
20+
String butFirstThree = getAllButFirstThreeCharacters(wordGiven);
21+
System.out.println(butFirstThree);
22+
23+
printCharacters(wordGiven);
24+
25+
printPhoneNumber("501-555-0100");
26+
27+
int first = findFirstE(wordGiven);
28+
System.out.println(first);
29+
30+
String names = "Jake";
31+
boolean finnOrJake = isFinn(names);
32+
System.out.println(finnOrJake);
33+
34+
35+
}
36+
37+
public static String getFirstCharacter(String wordGiven)
38+
{
39+
char firstLetter = wordGiven.charAt(0);
40+
String stFirst = Character.toString(firstLetter);
41+
return stFirst;
42+
}
43+
44+
public static String getLastCharacter(String wordGiven)
45+
{
46+
char lastLetter = wordGiven.charAt(wordGiven.length() - 1);
47+
String stLast = Character.toString(lastLetter);
48+
return stLast;
49+
}
50+
51+
public static String getFirstTwoCharacters(String wordGiven)
52+
{
53+
String firstTwo = wordGiven.substring(0, 2);
54+
return firstTwo;
55+
}
56+
57+
public static String getLastTwoCharacters(String wordGiven)
58+
{
59+
String lastTwo = wordGiven.substring(wordGiven.length() - 2, wordGiven.length());
60+
return lastTwo;
61+
}
62+
63+
public static String getAllButFirstThreeCharacters(String wordGiven)
64+
{
65+
//String allButFirstThree = wordGiven.substring(3);
66+
//return allButFirstThree;
67+
return wordGiven.substring(3);
68+
}
69+
70+
public static void printCharacters(String wordGiven)
71+
{
72+
char givenChar;
73+
74+
for(int i = 0; i < wordGiven.length(); i++)
75+
{
76+
givenChar = wordGiven.charAt(i);
77+
System.out.println(givenChar + ":" + i);
78+
}
79+
}
80+
81+
public static void printPhoneNumber(String number)
82+
{
83+
String areaCode = number.substring(0, 3);
84+
System.out.println("Area Code: \t" + areaCode);
85+
86+
String exchange = number.substring(4, 7);
87+
System.out.println("Area Code: \t" + exchange);
88+
89+
String lineNumber = number.substring(8);
90+
System.out.println("Area Code: \t" + lineNumber);
91+
}
92+
93+
public static int findFirstE(String wordGiven)
94+
{
95+
int indexOfE = wordGiven.indexOf("e");
96+
return indexOfE;
97+
}
98+
99+
public static boolean isFinn(String finnJake)
100+
{
101+
boolean fOrJ = true;
102+
if(finnJake.equals("Finn"))
103+
{
104+
fOrJ = true;
105+
}
106+
else
107+
{
108+
fOrJ = false;
109+
}
110+
111+
return fOrJ;
112+
}
113+
}

0 commit comments

Comments
 (0)