Env.java

package org.objectweb.common;

public class Env {

    private Env() {

    }

    // Variables related to Java Version
    public static final int JAVA_1_1_6 = 116;

    public static final int JAVA_1_1_7 = 117;

    public static final int JAVA_1_1_8 = 118;

    public static final int JAVA_1_2 = 120;

    public static final int JAVA_1_3 = 130;

    public static final int JAVA_1_4 = 140;

    private static int javaVersion = -1;

    public static boolean isOsWindows() {
        String osName = System.getProperty("os.name", "");
        return (osName.startsWith("Windows"));
    }

    public static boolean isOsMacOsX() {
        String osName = System.getProperty("os.name", "");
        return (osName.startsWith("Mac OS X"));
    }

    public static int getJavaVersion() {

        if (javaVersion == -1) {
            // Sets Java Version
            String strjv = System.getProperty("java.version", "");
            if (strjv.indexOf("1.1.6") == 0) {
                javaVersion = JAVA_1_1_6;
            }
            if (strjv.indexOf("1.1.7") == 0) {
                javaVersion = JAVA_1_1_7;
            }
            if (strjv.indexOf("1.1.8") == 0) {
                javaVersion = JAVA_1_1_8;
            }
            if (strjv.indexOf("1.2") == 0) {
                javaVersion = JAVA_1_2;
            }
            if (strjv.indexOf("1.3") == 0) {
                javaVersion = JAVA_1_3;
            }
            if (strjv.indexOf("1.4") == 0) {
                javaVersion = JAVA_1_4;
            }
        }
        return javaVersion;
    }

    public static boolean isJAVA2() {
        return (getJavaVersion() >= JAVA_1_2);
    }

    public static boolean isJAVA4() {
        return (getJavaVersion() >= JAVA_1_4);
    }
}

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