Exercise 4-1: (1) Write a program that uses the “short” and normal form of print statement.
import java.util.Date;
import static java.lang.System.out;
public class HelloDate
{
static void print(Object obj) {out.print(obj);}
static void println() {out.println();}
static void println(Object obj) {out.println(obj);}
public static void main(String[] args)
{
print("Hello, it’s: ");
// out.print("Hello, it’s: ");
// System.out.print("Hello, it’s: ");
println(new Date());
// out.println(new Date());
// System.out.println(new Date());
}
}
/*
javac HelloDate.java
java HelloDate
Hello, it’s: Fri Jul 14 21:18:04 EEST 2023
*/
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public class Sum
{
public static void main(String[] args)
{
int a = 1, b = 2;
System.out.println("a + b = " + a + b); // concatenate a and b
System.out.println("a + b = " + (a + b)); // compute a + b
}
}
/*
javac Sum.java
java Sum
a + b = 12
a + b = 3
*/