JAVA第一周 输出字符

1.1

代码如下

package HomeWork_1;public class JAVA1_1 {public static void main(String[] args) {System.out.println("Welcome to Java.");System.out.println("Welcome to Computer Science.");System.out.println("Programming is fun.");}}

运行结果

Welcome to Java.Welcome to Computer Science.Programming is fun.

1.2

代码如下

package HomeWork_1;public class JAVA1_1 {public static void main(String[] args) {for (int i = 0; i < 5; ++i) {System.out.println("Welcome to Java.");}}}

运行结果

Welcome to Java.Welcome to Java.Welcome to Java.Welcome to Java.Welcome to Java.

1.3

代码如下

package HomeWork_1;public class JAVA1_1 {public static void main(String[] args) {System.out.println("    J    A   V     V    A   ");System.out.println("    J   A A   V   V    A A  ");System.out.println("J   J  AAAAA   V V    AAAAA ");System.out.println(" J J  A     A   V    A     A");}}

运行结果

    J    A   V     V    A       J   A A   V   V    A A  J   J  AAAAA   V V    AAAAA  J J  A     A   V    A     A

1.4

代码如下

package HomeWork_1;public class JAVA1_1 {public static void main(String[] args) {int[] a = new int[4];System.out.println("a\ta^1\ta^2");for (int i = 0; i < 4; ++i) {a[i] = i + 1;System.out.print(a[i]);System.out.print("\t" + a[i] * a[i]);System.out.println("\t" + a[i] * a[i] * a[i]);}}}

运行结果

aa^1a^2111248392741664