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HarryLarryMaryJerry

Author: Robert Baxter

Consider the following classes:

public class Harry {
    public void method1() {
        System.out.println("harry 1");
    }

    public void method2() {
        method1();
        System.out.println("harry 2");
    }
}

public class Larry extends Harry {
    public void method1() {
        System.out.println("larry 1");
        super.method1();
    }
}

public class Mary extends Larry {
    public void method2() {
        System.out.println("mary 2");
    }

    public void method3() {
        super.method1();
        System.out.println("mary 3");
    }
}

public class Jerry extends Mary {
    public void method2() {
        super.method2();
        System.out.println("jerry 2");
    }
}

Suppose the following variables are defined:

Harry var1 = new Harry();
Harry var2 = new Larry();
Larry var3 = new Jerry();
Mary var4 = new Mary();
Mary var5 = new Jerry();
Object var6 = new Larry();

Indicate on each line below the output produced by each statement shown. If the statement produces more than one line of output indicate the line breaks with slashes as in a/b/c to indicate three lines of output with a followed by b followed by c. If the statement causes an error, write either runtime error or compiler error to indicate this.

var1.method1();
var2.method1();
var3.method1();
var4.method1();
var5.method1();
var6.method1();
var1.method2();
var2.method2();
var3.method2();
var4.method2();
var5.method2();
var6.method2();
var3.method3();
var5.method3();
((Larry) var1).method1();
((Mary) var2).method2();
((Jerry) var5).method1();
((Mary) var5).method3();
((Jerry) var4).method3();
((Mary) var6).method3();

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