程序代码：

package thread_436798_1_1.test097;

public class Main {
    public static void main(String[] args) {
        String str = "test";
        chang(str);
        System.out.println(str);

        StringBuffer strBuffer = new StringBuffer("test");
        chang_itworks(strBuffer);
        System.out.println(strBuffer);
    }

    public static void chang(String str) {
        str += "<<";
        str += ">>";
    }

    public static void chang_itworks(StringBuffer strBuffer) {
        strBuffer.append("<<" + ">>");
    }
}

程序代码：

package thread_436798_1_1.test107;

public class Test {
    public int coutStr(String[] arry, String str) {
        int count = 0;
        for (int i = 0; i < arry.length; i++) {
            if (arry[i].indexOf(str) != -1)
                count++;
        }
        return count;
    }

    public static void main(String[] args) {
        String[] arry = { "happy", "apple", "money", "ending" };
        String findStr = "a";
        Test test = new Test();
        int count = test.coutStr(arry, findStr);
        System.out.println("此数组中有" + count + "个字符串包含字符" + findStr);
    }
}

程序代码：

package thread_436798_1_1.test108;

public class Main {
    public static void main(String[] args) {
        char c[] = { '1', '2', '3', '4', '5' };
        for (int i = 0; i < c.length / 2; i++) {
            char d = c[i];
            c[i] = c[c.length - (i + 1)];
            c[c.length - (i + 1)] = d;
        }
        for (int i = 0; i < c.length; i++) {
            System.out.print(c[i]);
        }
    }
}

程序代码：

package thread_436798_1_1.test108;

public class Reverse {
    public static void main(String[] args) {
        StringBuffer string = new StringBuffer("12345");
        string.reverse();
        System.out.println(string);
    }

}

程序代码：

package thread_436798_1_1.test119;

public class Main {
    public static void main(String[] args) {
        boolean condition1 = true;
        boolean condition2 = false;
        if (condition1) {
            if (condition2) {
                System.out.println("在线支付");
            } else {
                System.out.println("货到付款");
            }
        }
    }

}

程序代码：

Sub division()
    Dim dividend As Integer 'ｱｻｳﾊ
    dividend = 0
    
    Dim divider As Integer 'ｳﾊ
    divider = 0
    
    If divider <> 0 And dividend / divider > 1 Then
        MsgBox "dividend / divider > 1"
    Else
        MsgBox "dividend / divider <= 1"
    End If
End Sub

程序代码：

Sub division()
    Dim dividend As Integer 'ｱｻｳﾊ
    dividend = 0
    
    Dim divider As Integer 'ｳﾊ
    divider = 0
    
    If divider <> 0 Then
        If dividend / divider > 1 Then
            MsgBox "dividend / divider > 1"
        Else
            MsgBox "dividend / divider <= 1"
        End If
    Else
        MsgBox "divider = 0"
    End If
End Sub