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Lesson8.java

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public class Lesson8 {

public static void main(String[] args) {

System.out.println(sum(1,2));

int xx = sum(1,3,2);

int zz = sum(1,1,2,2);

String str = sum("abc","cde", "ddd");

System.out.println(str);

System.out.println(sum("ddd","eee",555));

System.out.println(sum("ddd","555"));

}

public static int sum(int a, int b){

return a+b;

}

public static double sum(double x, double z){

return x+z;

}

public static int sum(int a, int b, int c){

return a+b+c;

}

public static double sum(double x, double z, double y){

return x+z+y;

}

public static int sum(int a,int b, int c,int d){

return a+b+c+d;

}

public static double sum(double x, double z, double y, double a){

return x+z+y +a;

}

public static String sum(String a, String b){

return a+b;

}

public static String sum(String a, String b, String c){

return a+b+c;

}

public static String sum(String a, String b, int c){

return a+b+c;

}

}