Working with Java Data Types

Select all statements that are not true:

Select which of the following statements are true:

Given the following the code:

/*1*/	public class MainClass { 							
/*2*/		public static void main(String[] args) {		
/*3*/			char var1 = 's';					
/*4*/			char var2 = 44;				
/*5*/			char var3 = '1';						
/*6*/			int var4 = 1000;						
/*7*/			System.out.println(var1++);	
/*8*/		}								
/*9*/	}

What statement is true ?

Given the following code:

/*1*/	public class MainClass { 							
/*2*/		public static void main(String[] args) { 		
/*3*/			char var1 = 's';					
/*4*/			char var2 = -44;	
/*5*/			char var3 = '1';	
/*6*/			int var4 = 1000;							
/*7*/			System.out.println(++var1 + ":" + var3);
/*8*/		}											
/*9*/	}

What statement is true ?

What is the output of the following code:

public class MainClass {
	public static void main(String[] args) {
		int x = 1;
		long y = 2;
		short z = 3;
		System.out.println(++x + y++ * z);
	}
}

Which of the following options contain correct code to declare and initialize variables to store whole numbers?

Select the options that, when inserted at // INSERT CODE HERE, will make the following code output a value of 3:

public class MainClass {
	static int a = 12;
	public static void main(String[] args) {
		// INSERT CODE HERE
		System.out.println(a++ % 5);
	}
}

What is the output of the following code:

public class MainClass {
	public static void main(String[] args) {
		int a=1;
		int b=++a + 2;
		int c=a++ + 3;
		int d = a * c + b * c % 3;
		System.out.println(d);
	}
}

Give the following code:

public class MainClass {
	public static void main(String[] args) {
		boolean a = 1;
		int b = 1;
		System.out.println(a == b);
	}
}

What statement is true ?

Examine the following code and select the correct options:

/*1*/	public class MainClass {
/*2*/		public static void main(String[] args) {
/*3*/			int int1 = 12;
/*4*/			double double1 = 17.8f;
/*5*/			boolean bool1 = true;
/*6*/			boolean returnVal = (int1 > double1) & bool1;
/*7*/			System.out.println(returnVal);
/*8*/		}
/*9*/	}

Given the following code:

public class MainClass {
	static int i = 0;
	
	public static void main(String [] args) {
		MainClass obj = new MainClass();
		++i;
		obj.i++;
		++obj.i;
		i+=1;
		System.out.println(obj.i + " " + MainClass.i);
	}
}

What is the output ?

Given the following code:

package mainpack;

public class MainClass {
	static int i = 0;
	
	public static void main(String [] args) {
		boolean log3 = ( 5.0 != 6.0) && ( 4 != 5);
		boolean log4 = (4 != 4) || (4 == 4);
		System.out.println("log3:"+ log3 + " log4:" + log4);
	}
}

What is the output ?

What will happen when you compile and run the following code?

public class MainClass {
	int CONST = 100;
	
	public static void method() {
		System.out.println(CONST);
	}

	public static void main(String argv[]) {
		int CONST = 200;
		MainClass s = new MainClass();
		s.method();
	}

}

Given the following declaration:

public class MainClass {
	static int CONST = 100;
	public static void main(String argv[]){
		MainClass mc = new MainClass();
	// INSERT CODE HERE
	}
}

Which of the following statements are correct if they replace the comment line?