在这一阶段，我开始深入研究Java中的运算符和表达式，这些是构建程序逻辑和实现算术操作的关键组件。

public class ArithmeticOperatorsExample {
public static void main(String[] args) {
int a = 10;
int b = 5;

System.out.println("Addition: " + (a + b));
System.out.println("Subtraction: " + (a - b));
System.out.println("Multiplication: " + (a * b));
System.out.println("Division: " + (a / b));
System.out.println("Modulus: " + (a % b));
}
}其次，我熟悉了关系运算符，用于比较两个值的大小关系。这些运算符返回布尔值，指示比较结果是否为真。

public class RelationalOperatorsExample {
public static void main(String[] args) {
int x = 10;
int y = 20;

System.out.println("x > y: " + (x > y));
System.out.println("x < y: " + (x < y));
System.out.println("x >= y: " + (x >= y));
System.out.println("x <= y: " + (x <= y));
System.out.println("x == y: " + (x == y));
System.out.println("x != y: " + (x != y));
}
}