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Subgoals

Section 4.16 Assessment: String methods

Subgoals for using objects (creating instances).

  1. Declare variable of appropriate class datatype.
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  2. Assign to variable: keyword new, followed by class name, followed by ().
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  3. Determine whether parameter(s) are appropriate (API)
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    1. Number of parameters
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    2. Data types of the parameters
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Exercises Exercises

    1.

    Q1: What is the output of the following code?
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    String temp = "abcde";
System.out.println(temp.length());
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    2.

    Q2: What is the output of the following code?
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    String temp = "abcdefghijklmnopqrstuvwxyz";
System.out.println(temp.indexOf("fgk"));
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    3.

    Q3: What is the output of the following code?
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    String temp = "catcatcat";
System.out.println(temp.indexOf("cat"));
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    4.

    Q4: What is the output of the following code?
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    String temp = "abcdefghijklmnopqrstuvwxyz";
System.out.println(charAt.indexOf(3));
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    5.

    Q5: What is the output of the following code?
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    String temp = "onetwothreefour";
System.out.println(temp.substring(3,6));
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    6.

    Q6: What is the output of the following code?
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    String temp = "onetwothreefour";
System.out.println(temp.substring(6));
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