Output using System.out.print in Java - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Java code snippet?

Consider the following Java code. What will it print to the console?

Java

public class Main {
    public static void main(String[] args) {
        System.out.print("Hello");
        System.out.print(" ");
        System.out.print("World");
    }
}

A Hello World

B Hello\nWorld

C HelloWorld\n

D Hello World\n

💡 Hint

System.out.print does not add a new line after printing.

System.out.print prints text exactly as given without adding a new line. So the three print statements print "Hello", then a space, then "World" all on the same line.

❓ Predict Output

intermediate

What does this Java code print?

Look at this code. What is the exact output?

Java

public class Main {
    public static void main(String[] args) {
        System.out.print(5 + 3);
        System.out.print("+");
        System.out.print(2);
    }
}

A 5+32

B 8+2

C 532

D 10

💡 Hint

Remember that + between numbers adds, but + between strings concatenates.

5 + 3 is evaluated first as 8, then the string "+" is printed, then 2 is printed. So the output is "8+2".

❓ Predict Output

advanced

What is the output of this Java code with mixed print and println?

What will this code print exactly?

Java

public class Main {
    public static void main(String[] args) {
        System.out.print("Start");
        System.out.println("Middle");
        System.out.print("End");
    }
}

A StartMiddleEnd

B Start\nMiddleEnd

C StartMiddle\nEnd

D Start\nMiddle\nEnd

💡 Hint

System.out.println adds a new line after printing, System.out.print does not.

The first print prints "Start" without new line, then println prints "Middle" and adds a new line, then print prints "End" on the new line. So output is "StartMiddle" then new line, then "End".

❓ Predict Output

advanced

What is the output of this Java code with character and string prints?

What does this code print?

Java

public class Main {
    public static void main(String[] args) {
        System.out.print('A');
        System.out.print("B");
        System.out.print(67);
    }
}

A 65B67

B ABC

C ABC67

D AB67

💡 Hint

Single quotes print the character, numbers print the number itself.

System.out.print('A') prints character A, System.out.print("B") prints string B, System.out.print(67) prints number 67 as digits. So output is "AB67".

❓ Predict Output

expert

What is the output of this Java code with expressions inside print?

What will this code print exactly?

Java

public class Main {
    public static void main(String[] args) {
        System.out.print("Result: " + 2 + 3);
        System.out.print(" and " + (2 + 3));
    }
}

A Result: 23 and 5

B Result: 5 and 5

C Result: 23 and 23

D Result: 5 and 23

💡 Hint

String concatenation happens left to right, parentheses change order of operations.

In the first print, "Result: " + 2 + 3 is evaluated left to right as string concatenation: "Result: 2" + 3 = "Result: 23". In the second print, (2 + 3) is evaluated first as 5, so output is " and 5". Combined output is "Result: 23 and 5".

Practice

1. What does System.out.print do in Java?

easy

A. Reads input from the user

B. Prints text and moves to a new line automatically

C. Stops the program execution

D. Prints text on the screen without moving to a new line

Solution

1. Step 1: Understand the function of System.out.print

   System.out.print outputs text to the screen but does not add a new line after printing.

2. Step 2: Compare with System.out.println

   System.out.println prints text and moves to the next line, unlike System.out.print.

3. Final Answer:

   Prints text on the screen without moving to a new line -> Option D

4. Quick Check:

   System.out.print shows output on same line [OK]

Hint: Remember: print stays on same line, println moves down [OK]

Common Mistakes:

• Confusing print with println
• Thinking print reads input
• Assuming print stops program

2. Which of the following is the correct syntax to print "Hello" without a new line in Java?

easy

A. System.out.print("Hello");

B. System.out.println("Hello");

C. print("Hello");

D. System.print.out("Hello");

Solution

1. Step 1: Identify correct method for printing without new line

   System.out.print prints text without moving to a new line.

2. Step 2: Check syntax correctness

   System.out.println adds a new line, print("Hello") is invalid in Java, and System.print.out is incorrect order.

3. Final Answer:

   System.out.print("Hello"); -> Option A

4. Quick Check:

   Correct syntax for print without newline is System.out.print [OK]

Hint: Use System.out.print for same line output [OK]

Common Mistakes:

• Using println instead of print
• Wrong method order like System.print.out
• Omitting System.out

3. What is the output of the following code?

System.out.print("Hi");
System.out.print(" ");
System.out.print("There");

medium

A. Hi There\n

B. Hi There

C. HiThere

D. Hi\nThere

Solution

1. Step 1: Analyze each print statement

   First prints "Hi" with no newline, second prints a space, third prints "There" continuing on the same line.

2. Step 2: Combine outputs

   All prints are on the same line, so output is "Hi There" exactly.

3. Final Answer:

   Hi There -> Option B

4. Quick Check:

   print joins outputs on same line [OK]

Hint: print does not add newline, so outputs join directly [OK]

Common Mistakes:

• Assuming print adds newline
• Ignoring the space printed
• Confusing \n with space

4. Find the error in this code snippet:

System.out.print("Hello");
System.out.print(123);
System.out.print(\n);

medium

A. Missing semicolon after first print

B. Cannot print numbers with print

C. Invalid escape sequence in third print

D. System.out.print requires parentheses

Solution

1. Step 1: Check each print statement syntax

   First and second print statements are correct with semicolons and valid arguments.

2. Step 2: Identify invalid escape sequence

   Third print uses \n without quotes, which is invalid syntax in Java.

3. Final Answer:

   Invalid escape sequence in third print -> Option C

4. Quick Check:

   Escape sequences must be inside quotes [OK]

Hint: Escape sequences need quotes, else syntax error [OK]

Common Mistakes:

• Forgetting quotes around strings
• Thinking numbers can't be printed
• Missing semicolons

5. How can you print the numbers 1 to 3 on the same line separated by spaces using System.out.print? Choose the correct code.

hard

A. for(int i=1; i<=3; i++) { System.out.print(i + " "); }

B. for(int i=1; i<=3; i++) { System.out.println(i + " "); }

C. for(int i=1; i<=3; i++) { System.out.print(i); System.out.print("\n"); }

D. for(int i=1; i<=3; i++) { System.out.print(i); System.out.print(" "); System.out.println(); }

Solution

1. Step 1: Understand the goal

   We want numbers 1 2 3 on the same line separated by spaces.

2. Step 2: Analyze each option

   for(int i=1; i<=3; i++) { System.out.print(i + " "); } prints each number with a space using print, so all stay on same line. for(int i=1; i<=3; i++) { System.out.println(i + " "); } uses println which moves to new line each time. for(int i=1; i<=3; i++) { System.out.print(i); System.out.print("\n"); } prints newline after each number, so numbers appear on separate lines. for(int i=1; i<=3; i++) { System.out.print(i); System.out.print(" "); System.out.println(); } prints newline after each number and space, so also multiple lines.

3. Final Answer:

   for(int i=1; i<=3; i++) { System.out.print(i + " "); } -> Option A

4. Quick Check:

   Use print with space to stay on same line [OK]

Hint: Use print with space inside loop to stay on one line [OK]

Common Mistakes:

• Using println inside loop
• Adding extra println causing new lines
• Not adding spaces between numbers