1. Java expressions. What is the value of each of the following Java expressions? To express...

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1. Java expressions. What is the value of each of the following Java expressions? To express your answer, write a Java literal of the appropriate type, such as 0, 0.0, false, or "0". If an expression results in a compile-time or run-time error, write ERROR for its value. Assume that the variables x, y, and z have been initialized as follows: int x = 2; int y = 3; int z = 4; Java expression X z+y/y + x x*y/z* z (z < x) && (z < y) || (x < y < z) (z y 1.0) (z x 2.0) - (double) (y / x) value 2 2. Java basics. Suppose that the variables a, b, c are of type int. (a) Complete the following code fragment so that, after the last statement, the variable max contains the largest of the three values. In each blank, write one of a, b, c, or max. You may use each variable name once, more than once, or not at all. int max = a; if ( if (- (b) Complete the following code fragment to rotate the variables a, b, and c: after the last statement, b should store the old value of a; c should store the old value of b; and a should store the old value of c. In each blank, write one of a, b, c, or temp. You may use each variable name once, more than once, or not at all. int temp = a; 3. Loops and debugging. What is the value of the variable count immediately after executing each of the following code fragments? For each code fragment at left, choose the best-matching letter at right. You may use each letter once, more than once, or not at all. int n = 10; int count = 0; for (int i = 0; i<n; i++) { count++; for (int j 0; j<n; j++) { count++; } } int n = 10; int count = 0; for (int i = 0; i <= n; i++) count++; for (int j = 0; j<n; j++) count++; int n = 10; int count = 0; int i = 1; while (i <= n) { count++; int j = 0; while (j<= n) { count++; j++; A. 0 B. 1 C. 2 D. 10 E. 11 F. 20 G. 22 H. 40 I. 100 J. 110 K. 120 L. 132 M. 220 N. 242 O. infinite loop P. run-time error 4. Properties of Java. (a) Which of the following are features of Java types and variables? Mark each statement as either true or false. true false You must declare each variable to have a specific type, but you can change its type with a subsequent declaration statement. You will get a compile-time error if you attempt to assign any value of type double to any variable of type int. You will get a compile-time error if you use any variable in an ex- pression before it has been declared. You will get a run-time error if you attempt to use any variable in an expression before it has been initialized. You will get a compile-time error if one operand of the multiplication operator (*) is of type int and the other is of type double. (b) Which of the following are advantages of using StdIn instead of command-line arguments? Mark each statement as either advantage or not advantage. advantage not advantage O You can enter input data while your program is executing. You can execute your program using different input data without having to recompile it. Your program can process the input data in reverse order. Your program can process huge amounts of input data more than can be stored in memory at any one time. 1. Java expressions. What is the value of each of the following Java expressions? To express your answer, write a Java literal of the appropriate type, such as 0, 0.0, false, or "0". If an expression results in a compile-time or run-time error, write ERROR for its value. Assume that the variables x, y, and z have been initialized as follows: int x = 2; int y = 3; int z = 4; Java expression X z+y/y + x x*y/z* z (z < x) && (z < y) || (x < y < z) (z y 1.0) (z x 2.0) - (double) (y / x) value 2 1. Java expressions. What is the value of each of the following Java expressions? To express your answer, write a Java literal of the appropriate type, such as 0, 0.0, false, or "0". If an expression results in a compile-time or run-time error, write ERROR for its value. Assume that the variables x, y, and z have been initialized as follows: int x = 2; int y = 3; int z = 4; Java expression X z+y/y + x x*y/z* z (z < x) && (z < y) || (x < y < z) (z y 1.0) (z x 2.0) - (double) (y / x) value 2 2. Java basics. Suppose that the variables a, b, c are of type int. (a) Complete the following code fragment so that, after the last statement, the variable max contains the largest of the three values. In each blank, write one of a, b, c, or max. You may use each variable name once, more than once, or not at all. int max = a; if ( if (- (b) Complete the following code fragment to rotate the variables a, b, and c: after the last statement, b should store the old value of a; c should store the old value of b; and a should store the old value of c. In each blank, write one of a, b, c, or temp. You may use each variable name once, more than once, or not at all. int temp = a; 2. Java basics. Suppose that the variables a, b, c are of type int. (a) Complete the following code fragment so that, after the last statement, the variable max contains the largest of the three values. In each blank, write one of a, b, c, or max. You may use each variable name once, more than once, or not at all. int max = a; if ( if (- (b) Complete the following code fragment to rotate the variables a, b, and c: after the last statement, b should store the old value of a; c should store the old value of b; and a should store the old value of c. In each blank, write one of a, b, c, or temp. You may use each variable name once, more than once, or not at all. int temp = a; 3. Loops and debugging. What is the value of the variable count immediately after executing each of the following code fragments? For each code fragment at left, choose the best-matching letter at right. You may use each letter once, more than once, or not at all. int n = 10; int count = 0; for (int i = 0; i<n; i++) { count++; for (int j 0; j<n; j++) { count++; } } int n = 10; int count = 0; for (int i = 0; i <= n; i++) count++; for (int j = 0; j<n; j++) count++; int n = 10; int count = 0; int i = 1; while (i <= n) { count++; int j = 0; while (j<= n) { count++; j++; A. 0 B. 1 C. 2 D. 10 E. 11 F. 20 G. 22 H. 40 I. 100 J. 110 K. 120 L. 132 M. 220 N. 242 O. infinite loop P. run-time error 3. Loops and debugging. What is the value of the variable count immediately after executing each of the following code fragments? For each code fragment at left, choose the best-matching letter at right. You may use each letter once, more than once, or not at all. int n = 10; int count = 0; for (int i = 0; i<n; i++) { count++; for (int j 0; j<n; j++) { count++; } } int n = 10; int count = 0; for (int i = 0; i <= n; i++) count++; for (int j = 0; j<n; j++) count++; int n = 10; int count = 0; int i = 1; while (i <= n) { count++; int j = 0; while (j<= n) { count++; j++; A. 0 B. 1 C. 2 D. 10 E. 11 F. 20 G. 22 H. 40 I. 100 J. 110 K. 120 L. 132 M. 220 N. 242 O. infinite loop P. run-time error 4. Properties of Java. (a) Which of the following are features of Java types and variables? Mark each statement as either true or false. true false You must declare each variable to have a specific type, but you can change its type with a subsequent declaration statement. You will get a compile-time error if you attempt to assign any value of type double to any variable of type int. You will get a compile-time error if you use any variable in an ex- pression before it has been declared. You will get a run-time error if you attempt to use any variable in an expression before it has been initialized. You will get a compile-time error if one operand of the multiplication operator (*) is of type int and the other is of type double. (b) Which of the following are advantages of using StdIn instead of command-line arguments? Mark each statement as either advantage or not advantage. advantage not advantage O You can enter input data while your program is executing. You can execute your program using different input data without having to recompile it. Your program can process the input data in reverse order. Your program can process huge amounts of input data more than can be stored in memory at any one time. 4. Properties of Java. (a) Which of the following are features of Java types and variables? Mark each statement as either true or false. true false You must declare each variable to have a specific type, but you can change its type with a subsequent declaration statement. You will get a compile-time error if you attempt to assign any value of type double to any variable of type int. You will get a compile-time error if you use any variable in an ex- pression before it has been declared. You will get a run-time error if you attempt to use any variable in an expression before it has been initialized. You will get a compile-time error if one operand of the multiplication operator (*) is of type int and the other is of type double. (b) Which of the following are advantages of using StdIn instead of command-line arguments? Mark each statement as either advantage or not advantage. advantage not advantage O You can enter input data while your program is executing. You can execute your program using different input data without having to recompile it. Your program can process the input data in reverse order. Your program can process huge amounts of input data more than can be stored in memory at any one time.

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1 Java expressions Lets evaluate the given Java expressions using the provided variable values int x 2 int y 3 int z 4 x evaluates to 2 z yy x can be evaluated step by step yy evaluates to 1 integer d... View the full answer