Java week4
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15 terms
Terms | Definitions |
|---|---|
 The expression (int)6.9 + (int)7.9 evaluates to ____. | 13 |
| Suppose that alpha is a double variable. What is the value of alpha after the following statement executes: alpha = 11.5 + (double)(15) / 2;. | 19.0 |
| String y = String.format("%15s", "Jumpin' Java"); | " Jumpin' Java" |
| String sentence; String str1, str2, str3; int length1, length2; sentence = "Today is Wednesday."; str1 = sentence.substring(9, 18); str2 = str1.substring(0, 3); str3 = sentence.replace('d', '*'); length1 = sentence.length(); length2 = str1.length(); Based on the code above, what is the value of str3? | Toay is Wenes*ay. |
| Assume that the following variables have been declared: String str1 = "Q.E.D."; String str2 = "Arcturan Megadonkey"; String str3 = "Sirius Cybernetics Corporation"; Evaluate the following expression. Make sure that your answer is the correct type: 2 is an int 2.0 is a double "X" is a String 'X' is a char str3.substring(9, str3.indexOf("e")) | "b" |
| Evaluate the following expression. Make sure that your answer is the correct type: 2 is an int 2.0 is a double Math.abs(2 + -4) | 2 |
| Assume that the following variables have been declared: String str1 = "Q.E.D."; String str2 = "Arcturan Megadonkey"; String str3 = "Sirius Cybernetics Corporation"; Evaluate the following expression. Make sure that your answer is the correct type: 2 is an int 2.0 is a double "X" is a String 'X' is a char str1.toLowerCase() | "q.e.d." |
| Evaluate the following expression. Make sure that your answer is the correct type: 2 is an int 2.0 is a double Math.sqrt(16) * Math.max(Math.abs(-5), Math.abs(-3)) | 20.0 |
| If you want to execute one piece of code when the variable x is greater than 100, and another piece of code otherwise, you should use : | an if statement with an else part |
| What is the output of the following Java code? int x = 6; if (x > 10) println("One "); println("Two "); | Two |
| What is the output of the following code fragment? int x = 10; if (x > 15) x = 0; println(x); else println(x + 5); | Syntax error (does not compile) |
| In a ____ control structure, the computer executes particular statements depending on some condition(s). | selection |
| What does <= mean? | less than or equal to |
| If s is a String object, which of these relational expressions is illegal (that is, your code will not compile if you use it) : | s > "Hi" |
| What is the output of the following Java code? int x = 0; if (x < 0) println("One "); println("Two "); println("Three"); | Two Three |
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