What are the common syntax errors when using for loops in Java?

The error program is as follows:

public class Forloop {
public static void main(String[] args) {
    for (int i = 1; i <= 4; i++) {
        for (int j = 1; j <= i; j++) {
            System.out.print(int j = Math.pow(j,i));
        }
    System.out.println();
    }
}

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Internal error:

You cannot have a variable declaration in your print statement, write it like this:

public static void main(final String[] args) {
    for (int i = 1; i <= 4; i++) {
        for (int j = 1; j <= i; j++) {
            System.out.print(Math.pow(j, i));
        }
        System.out.println();
    }
}

Another way is to write the declaration on its own line. You have to name it something other than j, because You have declared this variable:

public static void main(final String[] args) {
    for (int i = 1; i <= 4; i++) {
        for (int j = 1; j <= i; j++) {
            int exp = (int) Math.pow(j, i);
            System.out.print(exp);
        }
        System.out.println();
    }
}

In addition, you do not need the Math.pow() method to achieve output:

public static void main(final String[] args) {
    for (int i = 1; i <= 4; i++) {
        for (int j = 1; j <= i; j++) {
            System.out.print(j * j + " ");
        }
        System.out.println();
    }
}

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